Alvin Plantinga Quotes

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Reason is the power or capacity whereby we see or detect logical relationships among propositions.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
The mere fact that a belief is unpopular at present (or at some other time) is interesting from a sociological point of view but evidentially irrelevant.
Alvin Plantinga (God, Freedom, and Evil)
Suppose we concede that if I had been born of Muslim parents in Morocco rather than Christian parents in Michigan, my beliefs would be quite different. [But] the same goes for the pluralist...If the pluralist had been born in [Morocco] he probably wouldn't be a pluralist. Does it follow that...his pluralist beliefs are produced in him by an unreliable belief-producing process?
Alvin Plantinga
there is superficial conflict but deep concord between science and theistic religion, but superficial concord and deep conflict between science and naturalism.
Alvin Plantinga (Where the Conflict Really Lies: Science, Religion, and Naturalism)
Faith is not to be contrasted with knowledge: faith (at least in paradigmatic instances) is knowledge, knowledge of a certain special kind.
Alvin Plantinga (Knowledge and Christian Belief)
In religious belief as elsewhere, we must take our chances, recognizing that we could be wrong, dreadfully wrong. There are no guarantees; the religious life is a venture; foolish and debilitating error is a permanent possibility. (If we can be wrong, however, we can also be right.)
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Thomas Aquinas and John Calvin concur on the claim that there is a kind of natural knowledge of God (and anything on which Calvin and Aquinas are in accord is something to which we had better pay careful attention).
Alvin Plantinga (Warranted Christian Belief)
The Christian philosopher has a perfect right to the point of view and prephilosophical assumptions he brings to philosophic work; the fact that these are not widely shared outside the Christian or theistic community is interesting but fundamentally irrelevant.
Alvin Plantinga
Most of us form estimates of our intelligence, wisdom, and moral fiber that are considerably higher than an objective estimate would warrant; no doubt 90 percent of us think ourselves well above average along these lines.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Now faith is the substance of things hoped for, the evidence of things not seen. Hebrews 11:1
Alvin Plantinga (Knowledge and Christian Belief)
Is it a fact that those who believe in a Heavenly Father do so because or partly because their earthly fathers were inadequate? I doubt it. If it is a fact, however, it is of psychological rather than theological interest. It may help us understand theists, but it tells us nothing at all about the truth of their belief; to that it is simply irrelevant.
Alvin Plantinga (God, Freedom, and Evil)
The sensus divinitatis is a belief-producing faculty (or power, or mechanism) that under the right conditions produces belief that isn’t evidentially based on other beliefs.
Alvin Plantinga (Knowledge and Christian Belief)
The believer,” says Aquinas, “has sufficient motive for believing, for he is moved by the authority of divine teaching confirmed by miracles and, what is more, by the inward instigation of the divine invitation.”5
Alvin Plantinga (Knowledge and Christian Belief)
De jure objections are arguments of claims to the effect that Christian belief, whether or not true, is at any rate unjustifiable, or rationally unjustified, or irrational, or not intellectually respectable, or contrary to sound morality, or without sufficient evidence, or in some other way rationally unacceptable, not up to snuff from an intellectual point of view.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
The existence of God is neither precluded nor rendered improbable by the existence of evil. Of course, suffering and misfortune may nonetheless constitute a problem for the theist; but the problem is not that his beliefs are logically or probabilistically incompatible. The theist may find a religious problem in evil; in the presence of his own suffering or that of someone near to him he may find it difficult to maintain what he takes to be the proper attitude towards God. Faced with great personal suffering or misfortune, he may be tempted to rebel against God, to shake his fist in God's face, or even to give up belief in God altogether. But this is a problem of a different dimension. Such a problem calls, not for philosophical enlightenment, but for pastoral care. The Free Will Defense, however, shows that the existence of God is compatible, both logically and probabilistically, with the existence of evil; thus it solves the main philosophical problem of evil.
Alvin Plantinga (God, Freedom, and Evil)
One said whatever would be of advantage; the question whether it was true no longer arose.
Alvin Plantinga (Warranted Christian Belief)
while there is indeed conflict between science and naturalism (the view that there is no such person as God or anything like God), there is no conflict between science and religion.
Alvin Plantinga (Knowledge and Christian Belief)
And by way of concluding our study of natural atheology: none of the arguments we've examined has prospects for success; all are unacceptable. There are arguments we haven't considered, of course; but so far the indicated conclusion is that natural atheology doesn't work.
Alvin Plantinga (God, Freedom, and Evil)
Dawkins claims that the living world came to be by way of unguided evolution: “the Evidence of Evolution,” he says, “Reveals a Universe Without Design.” What he actually argues, however, is that there is a Darwinian series for contemporary life forms. As we have seen, this argument is inconclusive; but even if it were air-tight it wouldn’t show, of course, that the living world, let alone the entire universe, is without design. At best it would show, given a couple of assumptions, that it is not astronomically improbable that the living world was produced by unguided evolution and hence without design. But the argument form p is not astronomically improbable therefore p is a bit unprepossessing.
Alvin Plantinga (Where the Conflict Really Lies: Science, Religion, and Naturalism)
And according to Martin Luther, there are two ways of believing. In the first place I may have faith concerning God. This is the case when I hold to be true what is said concerning God. Such faith is on the same level with the assent I give to statements concerning the Turk, the devil and hell. A faith of this kind should be called knowledge or information rather than faith. In the second place there is faith in. Such faith is mine when I not only hold to be true what is said concerning God, but when I put my trust in him in such a way as to enter into personal relations with him, believing firmly that I shall find him to be and to do as I have been taught. . . . The word in is well chosen and deserving of due attention. We do not say, I believe God the Father or concerning God the Father, but in God the Father, in Jesus Christ, and in the Holy Spirit.3 Jonathan
Alvin Plantinga (Knowledge and Christian Belief)
A third possibility is that beliefs do indeed have causal efficacy with respect to behavior, but not by virtue of their content; put it in currently fashionable jargon, this would be the suggestion that while beliefs are causally efficacious, it is only by virtue of their syntax, not by virtue of their semantics. Indeed just this thesis is part of a popular contemporary view: the computational theory of mind. I read a poem very loudly, so loudly as to break a glass; the sounds I utter have meaning, but their meaning is causally irrelevant to the breaking of the glass. In the same way it might be that these creatures' beliefs have causal efficacy, but not by way of the content of those beliefs. A substantial share of probability must be reserved for this option; and under this option, as under the preceding two, the likelihood that the beliefs of these creatures would be for the most part true would be low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
The philosopher Alvin Plantinga said it like this: Could there really be any such thing as horrifying wickedness [if there were no God and we just evolved]? I don’t see how. There can be such a thing only if there is a way that rational creatures are supposed to live, obliged to live. . . . A [secular] way of looking at the world has no place for genuine moral obligation of any sort . . . and thus no way to say there is such a thing as genuine and appalling wickedness. Accordingly, if you think there really is such a thing as horrifying wickedness (. . . and not just an illusion of some sort), then you have a powerful . . . argument [for the reality of God].7 In short, the problem of tragedy, suffering and injustice is a problem for everyone. It is at least as big a problem for non-belief in God as for belief. It is therefore a mistake, though an understandable one, to think that if you abandon belief in God it somehow makes the problem of evil easier to handle. A woman in my church once confronted me about sermon illustrations in which evil events turned out for the good. She had lost a husband in an act of violence during a robbery. She also had several children with severe mental and emotional problems. She insisted that for every one story in which evil turns out for good there are one hundred in which there is no conceivable silver lining. In the same way, much of the discussion so far in this chapter may sound cold and irrelevant to a real-life sufferer. ‘So what if suffering and evil doesn’t logically disprove God?’ such a person might say. ‘I’m still angry. All this philosophising does not get the Christian God “off the hook” for the world’s evil and suffering!’ In response the philosopher Peter Kreeft points out that the Christian God came to earth to deliberately put himself on the hook of human suffering. In Jesus Christ, God experienced the greatest depths of pain. Therefore, though Christianity does not provide the reason for each experience of pain, it provides deep resources for actually facing suffering with hope and courage rather than bitterness and despair.
Timothy J. Keller (The Reason for God: Belief in an Age of Skepticism)
A fourth possibility: It could be that belief is causally efficacious semantically as well as syntactically with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive, at any rate less adaptive than available alternatives should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
The Reformed epistemologist may concur with Calvin in holding that God has implanted in us a natural tendency to see his hand in the world around us; the same cannot be said for the Great Pumpkin, there being no Great Pumpkin and no natural tendency to accept beliefs about the Great Pumpkin.
Alvin Plantinga (Faith And Rationality: Reason and Belief in God)
If you have evidence for every proposition you believe, then you will believe infinitely many propositions. So presumably some propositions can properly be believed and accepted without evidence. Well, why not belief in God? Why is it not entirely acceptable, desirable, right, proper, and rational to accept belief in God without any argument or evidence?
Alvin Plantinga (Faith And Rationality: Reason and Belief in God)
Accordingly, criteria for proper basicality must be reached from below rather than above; they should not be presented ex cathedra but argued to and tested by a relevant set of examples.
Alvin Plantinga (Faith And Rationality: Reason and Belief in God)
Freud's complaint is that religious belief lacks warrant because it is produced by wishful thinking, which is a cognitive process that is not aimed at the production of true belief; in Freud's words, it is not reality oriented. But even if it were established that wish fulfilment is the source of theistic belief, however, that wouldn't be enough to establish that the latter has no warrant. It must also be established that wish-fulfilment in this particular manifestation is not aimed at true belief. The cognitive design plan of human beings is subtle and complex; a source of belief might be such that in general it isn't aimed at the formation of true belief, but in this special case precisely that is its purpose. Perhaps human beings have been created by God with a deep need to believe in his presence and goodness and love. Perhaps God has designed us that way in order that we come to believe in him and be aware of his presence; perhaps this is how God has arranged for us to come to know him. If so, then the particular bit of the cognitive design plan governing the formation of theistic belief is indeed aimed at true belief, even if the belief in question arises from wish fulfilment.
Alvin Plantinga
The existence of God is neither precluded nor rendered improbable by the existence of evil. Of course, suffering and misfortune may nonetheless constitute a problem for the theist; but the problem is not that his beliefs are logically or probabilistically incompatible. The theist may find a religious problem in evil; in the presence of his own suffering or that of someone near to him he may find it difficult to maintain what he takes to be the proper attitude towards God. Faced with great personal suffering or misfortune, he may be tempted to rebel against God, to shake his fist in God's face, or even to give up belief in God altogether. But this is a problem of a different dimension. Such a problem calls, not for philosophical enlightenment, but for pastoral care.
Alvin Plantinga (God, Freedom, and Evil)
If my belief in other minds is rational, so is my belief in God.
Alvin Plantinga (God and Other Minds: A Study of the Rational Justification of Belief in God (Cornell Paperbacks))
God creates a world containing evil and has a good reason for doing so.
Alvin Plantinga (God, Freedom, and Evil)
God has ...created us with cognitive faculties designed to enable us to achieve true beliefs with respect to a wide variety of propositions - propositions about our immediate environment, about our own interior lives, about the thoughts and experiences of other persons, about our universe at large, about right and wrong, about the whole realm of abstracta - numbers, properties, propositions - ... and about himself.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
One who states and proposes this scheme makes several claims about the Dinge: that they are not in space and time, for example, and more poignantly, that our concepts don't apply to them (applying only to the phenomena), so that we cannot refer to or think about them. But if we really can't think the Dinge, then we can't think about them (and can't whistle them either); if we can't think about them, we can't so much as entertain the thought that there are such things. The incoherence is patent.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Indeed, the Christian tradition is so consistent on this matter that it is difficult to understand where Dawkins has got the idea of faith as “blind trust” from. Even a superficial reading of the works of leading Christian philosophers such as Richard Swinburne (Oxford University), Nicolas Wolterstorff (Yale University), and Alvin Plantinga (University of Notre Dame), or even popular writers such as C. S. Lewis,43 would reveal their passionate commitment to the question of how one can make “warranted,” “evidenced,” or “coherent” statements concerning God.44 There is no question of “blind trust.
Alister E. McGrath (Dawkins' God: From The Selfish Gene to The God Delusion)
Of course defeaters can be themselves be defeated; so couldn’t you get a defeater for this defeater—a defeater-defeater? Maybe by doing some science—for example, determining by scientific means that her cognitive faculties are reliable? Couldn’t she go to the MIT cognitive-reliability laboratory for a check-up? Clearly that won’t help. Obviously that course would presuppose that her cognitive faculties are reliable; she’d be relying on the accuracy of her faculties in believing there is such a thing as MIT, that she has in fact consulted scientists, that they have given her a clean bill of cognitive health, and so on.
Alvin Plantinga (Where the Conflict Really Lies: Science, Religion, and Naturalism)
faith is the belief in the great things of the gospel that results from the internal instigation of the Holy Spirit.
Alvin Plantinga (Knowledge and Christian Belief)
There seem to be two strands to this notion of justification. On the one hand, justification seems to have something to do with evidence: a belief (or the believer) is unjustified if there isn’t any evidence, or enough evidence, for that belief. On the other hand, justification seems to have something to do with duty, or obligation, or moral rightness.
Alvin Plantinga (Knowledge and Christian Belief)
There are many serious arguments for the existence of God – the philosopher Alvin Plantinga has suggested that there are at least “two dozen or so” [...] One that is worth mentioning in passing given the themes of the previous chapter derives from St. Augustine, and can be summarized in the following way. As we have seen, it is very hard to avoid realism about universals, propositions, and numbers and other mathematical objects. For the reasons we examined, the existence of these entities in some form or other cannot reasonably be denied, and it is implausible to regard them either as material things or as dependent on the human mind for their existence. [...] At the same time, it is also hard to see how they could exist apart from any mind whatsoever: a proposition, for example, just seems clearly to be the sort of thing that exists only as entertained or contemplated by a mind. Furthermore, it seems implausible to say, as Aristotle apparently would, that triangularity (for example), though neither material nor entirely mental, would go completely out of existence if every particular triangular thing and every mind that might think about triangularity went out of existence.[...] But if universals, propositions, and mathematical objections are eternal and necessarily existing entities that cannot plausibly exist apart from a mind, and such a mind could not (for the reasons we have seen) be a finite or limited mind like ours, it follows that they must exist in an eternal and infinite mind. But such a mind is exactly what God is supposed to be. Hence it follows that God exists.
Edward Feser (The Last Superstition: A Refutation of the New Atheism)
Richard Dawkins (according to Peter Medawar, 'one of the most brilliant of the rising generation of biologists') once leaned over and remarked to A.J. Ayer at one of those elegant, candle-lit, bibulous Oxford college dinners that he couldn't imagine being and atheist before 1859 (the year Darwin's Origin of Species was published); 'although atheism might have been logically tenable before Darwin,' said he, 'Darwin made it possible to be an intellectually fulfilled atheist.' Now Dawkins thinks Darwin made it possible to be an intellectually fulfilled atheist. But perhaps Dawkins is dead wrong here. Perhaps the truth lies in the opposite direction. If our cognitive faculties have originated as Dawkins thinks, then their ultimate purpose or function (if they have a purpose or function) will be something like survival (of individual species, gene, or genotype); but then it seems initially doubtful that among their functions-ultimate, proximate, or otherwise-would be the production of true beliefs.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
...natural selection is not the only process at work in evolution; there is also (among others) random genetic drift, which 'can lead to the elimination of a more fit gene and the fixation of a less fit one.' For example, a genetically based and adaptively favorable trait might arise within a population of sea gulls; perhaps six members of the flock enjoy it. Being birds of a feather, they flock together-sadly enough, at the site of a natural so that all are killed in a tidal wave or volanic eruption or by a large meteorite. The more fit gene thus gets eliminated from the population. (There is also the way in which a gene can be fixed, in a small population, by way of random walk.)...there is no reason to think it inevitable that natural selection will have the opportunity to select for optimal design. For example, an adaptively positive trait might be linked with an adaptively negative trait by pleiotropy (where one gene codes for more than one trait or system); then it could happen that the genes get selected and perpetuated by virtue of its link with the gene. A truly optimal system-one with the positive trait but without the negative-may never show up, or may show up too late to fit in with the current development of the organism.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
The probability of human cognitive faculties being reliable (producing mostly true beliefs), given that human beings have cognitive faculties (of the sort we have) and given that these faculties have been produced by evolution (Darwin's blind evolution, unguided by the hand of God or any other person), [is low]. If metaphysical naturalism and this evolutionary account are both true, then our cognitive faculties will have resulted from blind mechanisms like natural selection, working on such sources of genetic variation as random genetic mutation. Evolution is interested, not in true belief, but in survival or fitness. It is therefore unlikely that our cognitive faculties have the production of true belief as a proximate or any other function, and the probability of our faculties being reliable (given naturalistic evolution) would be fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: It could be that belief is causally efficacious semantically as well as syntactically with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive, at any rate less adaptive than available alternatives should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Once I come to doubt the reliability of my cognitive faculties, I can't properly try to allay that doubt by producing an argument; for in so doing I rely on the very faculties I am doubting. The conjunction of evolution with naturalism gives its adherents a reason for doubting that our beliefs are mostly true; perhaps they are mostly wildly mistaken. But then it won't help to argue that they can't be wildly mistaken; for the very reason for mistrusting our cognitive faculties generally will be a reason for mistrusting the faculties generating the beliefs involved in the argument.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
If I lie to you and you believe me, then the belief you acquire has little if any warrant, even though your cognitive faculties are functioning just as they should. The reason is that warrant requires more than just that your faculties be functioning properly; the rest of your cognitive situation, including your cognitive environment, must also meet certain conditions.
Alvin Plantinga
A fifth possibility is that the beliefs of our hypothetical creatures are indeed both causally connected with their behavior and also adaptive. Assume, then, that our creatures have belief systems, and that these systems are adaptive: they produce adaptive behavior, and at not too great a cost in terms of resources. What is the probability that their cognitive faculties are reliable; and what is the probability that a belief produced by those faculties will be true? Not as high as you might think. For, of course, beliefs don't causally produce behavior by themselves; it is beliefs, desires, and other things that do so together. Suppose we oversimplify a bit and say that my behavior is a causal product just of my beliefs and desires. Then the problem is that clearly there will be any number of different patterns of belief and desire that would issue in the same action; and among those there will be many in which the beliefs are wildly false. Paul is a prehistoric hominid; the exigencies of survival call for him to display tiger-avoidance behavior. There will be many behaviors that are appropriate: fleeing, for example, or climbing a steep rock face, or crawling into a hole too small to admit the tiger, or leaping into a handy lake. Pick any such appropriately specific behavior B. Paul engages in B, we think, because, sensible fellow that he is, he has an aversion to being eaten and believes that B is a good means of thwarting the tiger's intentions.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fifth possibility is that the beliefs of our hypothetical creatures are indeed both causally connected with their behavior and also adaptive. Assume, then, that our creatures have belief systems, and that these systems are adaptive: they produce adaptive behavior, and at not too great a cost in terms of resources. What is the probability that their cognitive faculties are reliable; and what is the probability that a belief produced by those faculties will be true? Not as high as you might think. For, of course, beliefs don't causally produce behavior by themselves; it is beliefs, desires, and other things that do so together. Suppose we oversimplify a bit and say that my behavior is a causal product just of my beliefs and desires. Then the problem is that clearly there will be any number of different patterns of belief and desire that would issue in the same action; and among those there will be many in which the beliefs are wildly false. Paul is a prehistoric hominid; the exigencies of survival call for him to display tiger avoidance behavior. There will be many behaviors that are appropriate: fleeing, for example, or climbing a steep rock face, or crawling into a hole too small to admit the tiger, or leaping into a handy lake. Pick any such appropriately specific behavior B. Paul engages in B, we think, because, sensible fellow that he is, he has an aversion to being eaten and believes that B is a good means of thwarting the tiger's intentions.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Suppose, therefore, you find yourself with the doubt that our cognitive faculties produce truth: you can't quell that doubt by producing an argument about God and his veracity, or indeed, any argument at all; for the argument, of course, will be under as much suspicion as its source. Here no argument will help you; here salvation will have to be by grace, not by works. But the theist has nothing impelling him in the direction of such skepticism in the first place; no element of his noetic system points in that direction; there are no propositions he already accepts just by way of being a theist, which together with forms of reasoning (the defeater system, for example) lead to the rejection of the belief that our cognitive faculties have the apprehension of truth as their purpose and for the most part fulfill that purpose.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: it could be that belief is causally efficacious—'semantically' as well as 'syntactically'—with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive—at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia: maladaptive ,but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy-expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
It could be that belief is causally efficacious—semantically as well as syntactically—with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive—at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
...reliable cognitive systems are not necessarily more fitness-enhancing than unreliable ones...for any two cognitive systems S1 and S2, if S1 is more reliable than S2, then S1 is not more fitness-enhancing than S2. S1, for example, might cost too much by way of energy or memory capacity; alternatively, the less reliable S2 might produce more by way of false beliefs but nonetheless contribute more to survival.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
The traditional theist, on the other hand, isn't forced into that appalling loop. On this point his set of beliefs is stable. He has no corresponding reason for doubting that it is a purpose of our cognitive systems to produce true beliefs...He may indeed endorse some form of evolution; but if he does, it will be a form of evolution guided and orchestrated by God. he believes that God is the premier knower and has created us human beings in his image, an important part of which involves his endowing them with a reflection of his powers as a knower.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A second possibility is that the beliefs of these creatures are not among the causes of their behavior, but are effects of that behavior, or effects of proximate causes that also cause behavior. Their beliefs might be like a sort of decoration that isn't involved in the causal chain leading to action. Their waking beliefs might be no more causally efficacious, with respect to their behavior, than our dream beliefs are with respect to ours. This could go by way of pleiotropy: genes that code for traits important to survival also code for consciousness and belief; but the latter don't figure into the etiology of action. Under these conditions, of course, their beliefs could be wildly false. It could be that one of these creatures believes that he is at that elegant, bibulous Oxford dinner, when in fact he is slogging his way through some primeval swamp, desperately fighting off hungry crocodiles. Under this possibility, as under the first, beliefs would not have (or need not have) any purpose or function; they would be more like unintended by-products. Under this possibility as under the first, the probability that their cognitive faculties are reliable, is low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: It could be that belief is causally efficacious semantically as well as syntactically with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive, at any rate less adaptive than available alternatives should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Perhaps Paul very much likes the idea of being eaten, but whenever he sees a tiger, always runs off looking for a better prospect, because he thinks it unlikely that the tiger he sees will eat him. This will get his body parts in the right place so far as survival is concerned, without involving much by way of true belief. (Of course we must postulate other changes in Paul's ways of reasoning, including how he changes belief in response to experience, to maintain coherence.) Or perhaps he thinks the tiger is a large, friendly, cuddly pussycat and wants to pet it; but he also believes that the best way to pet it is to run away from it. Or perhaps he confuses running toward it with running away from it, believing of the action that is really running away from it, that it is running toward it; or perhaps he thinks the tiger is a regularly recurring illusion, and, hoping to keep his weight down, has formed the resolution to run a mile at top speed whenever presented with such an illusion; or perhaps he thinks he is about to take part in a sixteen-hundred-meter race, wants to win, and believes the appearance of the tiger is the starting signal; or perhaps. . . . Clearly there are any number of belief desire systems that equally fit a given bit of behavior where the beliefs are mostly false. Indeed, even if we fix desire, there will still be any number of systems of belief that will produce a given bit of behavior: perhaps Paul does not want to be eaten, but (a) thinks the best way to avoid being eaten is to run toward the tiger, and (b) mistakenly believes that he is running toward it when in fact he is running away.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
What is the probability that their faculties are reliable? What is P(R/(N8cE8cQ), specified not to us, but to them? According to Quine and Popper, the probability in question would be rather high: belief is connected with action in such a way that extensive false belief would lead to maladaptive behavior, in which case it is likely that the ancestors of those creatures would have displayed that pathetic but praiseworthy tendency Quine mentions. But now for the contrary argument. First, perhaps it is likely that their behavior is adaptive; but nothing follows about their beliefs. We aren't given, after all, that their beliefs are so much as causally connected with their behavior; for we aren't given that their beliefs are more than mere epiphenomena, not causally involved with behavior at all. Perhaps their beliefs neither figure into the causes of their behavior, nor are caused by that behavior. (No doubt beliefs would be caused by something in or about these creatures, but it need not be by their behavior.) You may object that as you use 'belief, beliefs just are among the processes (neural structures, perhaps) that (together with desire, fear, and the like) are causally efficacious. Fair enough (you have a right to use that word as you please); but then my point can be put as follows: in that use of belief it may be that things with propositional contents are not beliefs, that is, do not have causal efficacy. It can't be a matter of definition that there are neural structures or processes displaying both propositional content and causal efficacy with respect to behavior; and perhaps the things that display causal efficacy do not display the sort of relation to content (to a proposition) that a belief of the proposition p must display toward p. You say that in that case the things, if any, that stand in that relation to a proposition would not be beliefs (because, as you see it, beliefs must have causal efficacy). Well, there is no sense in arguing about words: I'll give you the term 'belief and put my case using other terms. What I say is possible is that the things (mental acts, perhaps) that stand in that relation to content (to propositions) do not also enjoy causal efficacy. Call those things whatever you like: they are the things that are true or false, and it is about the likelihood of their truth or falsehood that we are asking. If these things, whatever we call them, are not causally connected with behavior, then they would be, so to speak, invisible to evolution; and then the fact that they arose during the evolutionary history of these beings would confer no probability on the idea that they are mostly true, or mostly nearly true, rather than wildly false. Indeed, the probability of their being for the most part true would have to be estimated as fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
What evolution requires is that our behavior have survival value, not necessarily that our beliefs be true. (Sufficient that we be programmed to act in adaptive ways.) But there are many ways in which our behavior could be adaptive, even if our beliefs were for the most part false. Our whole belief structure might (a) be a sort of byproduct or epiphenomenon, having no real connection with truth, and no real connection with our action. Or (b) our beliefs might be connected in a regular way with our actions, and with our environment, but not in such as way that the beliefs would be for the most part true.
Alvin Plantinga
A fourth possibility: it could be that belief is causally efficacious—semantically as well as syntactically—with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive—at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia: maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: It could be that belief is causally efficacious semantically as well as syntactically with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive, at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fifth (and final) possibility is that the beliefs of our hypothetical creatures are indeed both causally connected with their behavior and also adaptive. Assume, then, that our creatures have belief systems, and that these systems are adaptive: they produce adaptive behavior, and at not too great a cost in terms of resources. What is the probability (on this assumption together with N&E&C) that their cognitive faculties are reliable; and what is the probability that a belief produced by those faculties will be true? Not as high as you might think. For, of course, beliefs don't causally produce behavior by themselves; it is beliefs, desires, and other things that do so together. Suppose we oversimplify a bit and say that my behavior is a causal product just of my beliefs and desires. Then the problem is that clearly there will be any number of different patterns of belief and desire that would issue in the same action; and among those there will be many in which the beliefs are wildly false. Paul is a prehistoric hominid; the exigencies of survival call for him to display tiger-avoidance behavior. There will be many behaviors that are appropriate: fleeing, for example, or climbing a steep rock face, or crawling into a hole too small to admit the tiger, or leaping into a handy lake. Pick any such appropriately specific behavior B. Paul engages in B, we think, because, sensible fellow that he is, he has an aversion to being eaten and believes that B is a good means of thwarting the tiger's intentions.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Perhaps Paul very much likes the idea of being eaten, but whenever he sees a tiger, always runs off looking for a better prospect, because he thinks it unlikely that the tiger he sees will eat him. This will get his body parts in the right place so far as survival is concerned, without involving much by way of true belief. (Of course we must postulate other changes in Paul's ways of reasoning, including how he changes belief in response to experience, to maintain coherence.) Or perhaps he thinks the tiger is a large, friendly, cuddly pussycat and wants to pet it; but he also believes that the best way to pet it is to run away from it. Or perhaps he confuses running toward it with running away from it, believing of the action that is really running away from it, that it is running toward it; or perhaps he thinks the tiger is a regularly recurring illusion, and, hoping to keep his weight down, has formed the resolution to run a mile at top speed whenever presented with such an illusion; or perhaps he thinks he is about to take part in a sixteen-hundred-meter race, wants to win, and believes the appearance of the tiger is the starting signal; Clearly there are any number of belief desire systems that equally fit a given bit of behavior where the beliefs are mostly false. Indeed, even if we fix desire, there will still be any number of systems of belief that will produce a given bit of behavior: perhaps Paul does not want to be eaten, but (a) thinks the best way to avoid being eaten is to run toward the tiger, and (b) mistakenly believes that he is running toward it when in fact he is running away.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
If our origin involves random genetic variation, then we and our cognitive faculties would have developed by way of chance rather than by way of design, as would be required by our having been created by God in his image. But this is to import far too much into the biologist's term 'random'. Those random variations are random in the sense that they don't arise out of the organism's design plan and don't ordinarily play a role in its viability; perhaps they are also random in the sense that they are not predictable. But of course it doesn't follow that they are random in the much stronger sense of not being caused, orchestrated and arranged by God.
Alvin Plantinga
If our origin involves random genetic variation, then we and our cognitive faculties would have developed by way of chance rather than by way of design, as would be required by our having been created by God in his image. But this is to import far too much into the biologist's term 'random'. Those random variations are random in the sense that they don't arise out of the organism's design plan and don't ordinarily play a role in its viability; perhaps they are also random in the sense that they are not predictable. But of course it doesn't follow that they are random in the much stronger sense of not being caused, orchestrated and arranged by God.
Alvin Plantinga
Now according to traditional Christian (and Jewish and Muslim) thought, we human beings have been created in the image of God. This means, among other things, that he created us with the capacity for achieving knowledge—knowledge of our environment by way of perception, of other people by way of something like what Thomas Reid calls sympathy, of the past by memory and testimony, of mathematics and logic by reason, of morality, our own mental life, God himself, and much more. And the above evolutionary account of our origins is compatible with the theistic view that God has created us in his image. So evolutionary theory taken by itself (without the patina of philosophical naturalism that often accompanies expositions of it) is not as such in tension with the idea that God has created us and our cognitive faculties in such a way that the latter are reliable, that (as the medievals like to say) there is an adequation of intellect to reality.
Alvin Plantinga
Evolution is interested (so to speak) only in adaptive behavior, not in true belief. Natural selection doesn't care what you believe; it is interested only in how you behave. It selects for certain kinds of behavior, those that enhance fitness, which is a measure of the chances that one's genes are widely represented in the next and subsequent generations. It doesn't select for belief, except insofar as the latter is appropriately related to behavior. But then the fact that we have evolved guarantees at most that we behave in certain ways--ways that contribute to our (or our ancestors') surviving and reproducing in the environment in which we have developed.
Alvin Plantinga
What is relevant, here, is not ideal function; we aren't thinking of the way in which an ideally rational person would function. (An ideally rational person, I suppose, would be omniscient, and perhaps a really ideally rational person would be essentially omniscient, omniscient in every possible world in which he exists.) What is relevant here is the sort of function displayed by a cognitively healthy human being.
Alvin Plantinga
A third possibility is that beliefs do indeed have causal efficacy with respect to behavior, but not by virtue of their content; put it in currently fashionable jargon, this would be the suggestion that while beliefs are causally efficacious, it is only by virtue of their syntax, not by virtue of their semantics. Indeed just this thesis is part of a popular contemporary view: the computational theory of mind. I read a poem very loudly, so loudly as to break a glass; the sounds I utter have meaning, but their meaning is causally irrelevant to the breaking of the glass. In the same way it might be that these creatures' beliefs have causal efficacy, but not by way of the content of those beliefs. A substantial share of probability must be reserved for this option; and under this option, as under the preceding two, the likelihood that the beliefs of these creatures would be for the most part true would be low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A third possibility is that beliefs do indeed have causal efficacy with respect to behavior, but not by virtue of their content; put it in currently fashionable jargon, this would be the suggestion that while beliefs are causally efficacious, it is only by virtue of their syntax, not by virtue of their semantics. Indeed just this thesis is part of a popular contemporary view: the computational theory of mind. I read a poem very loudly, so loudly as to break a glass; the sounds I utter have meaning, but their meaning is causally irrelevant to the breaking of the glass. In the same way it might be that these creatures' beliefs have causal efficacy, but not by way of the content of those beliefs.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: it could be that belief is causally efficacious—semantically as well as syntactically—with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive—at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia: maladaptive ,but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy-expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
...reliable cognitive systems are not necessarily more fitness-enhancing than unreliable ones...for any two cognitive systems S1 and S2, if S1 is more reliable than S2, then S1 is more fitness-enhancing than S2. S1, for example, might cost too much by way of energy or memory capacity; alternatively, the less reliable S2 might produce more by way of false beliefs but nonetheless contribute more to survival.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
A fourth possibility: it could be that belief is causally efficacious—semantically as well as syntactically—with respect to behavior, but maladaptive. As Stich points out, it is quite possible (and quite in accord with current evolutionary theory) that a system or trait that is in fact maladaptive—at any rate less adaptive than available alternatives—should nonetheless become fixed and survive. Perhaps the belief systems of these creatures are like the albinism found in many arctic animals, or like sickle-cell anemia, maladaptive, but connected with genes coding for behavior or traits conducive to survival. They could be maladaptive in two ways. First, perhaps their beliefs are a sort of energy expensive distraction, causing these creatures to engage in survival enhancing behavior, all right, but in a way less efficient and economic than if the causal connections by-passed belief altogether. Second, it could be that beliefs in fact produce maladaptive behavior. Perhaps a mildly maladaptive belief-behavior structure is coded for by the same genetic structure that produces some adaptive behavior. Suppose these creatures' beliefs do not for the most part produce adaptive behavior: the mechanisms that produce them might nonetheless survive. Perhaps on balance their behavior is sufficiently adaptive, even if not every segment of it is. Some probability, then, must be reserved for the possibility that these creatures have cognitive faculties that are maladaptive, but nonetheless survive; and on this possibility, once more, the probability that their beliefs would be for the most part true is fairly low.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Perhaps Paul very much likes the idea of being eaten, but whenever he sees a tiger, always runs off looking for a better prospect, because he thinks it unlikely that the tiger he sees will eat him. This will get his body parts in the right place so far as survival is concerned, without involving much by way of true belief. (Of course we must postulate other changes in Paul's ways of reasoning, including how he changes belief in response to experience, to maintain coherence.) Or perhaps he thinks the tiger is a large, cuddly pussycat and wants to pet it; but he also believes that the best way to pet it is to run away from it. Or perhaps he confuses running toward it with running away from it, believing of the action that is really running away from it, that it is running toward it; or perhaps he thinks the tiger is a regularly recurring illusion, and, hoping to keep his weight down, has formed the resolution to run a mile at top speed whenever presented with such an illusion; or perhaps he thinks he is about to take part in a sixteen-hundred-meter race, wants to win, and believes the appearance of the tiger is the starting signal; Clearly there are any number of belief desire systems that equally fit a given bit of behavior where the beliefs are mostly false. Indeed, even if we fix desire, there will still be any number of systems of belief that will produce a given bit of behavior: perhaps Paul does not want to be eaten, but (a) thinks the best way to avoid being eaten is to run toward the tiger, and (b) mistakenly believes that he is running toward it when in fact he is running away.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Am I really arrogant and egoistic just by virtue of believing something I know others don’t believe, where I can’t show them that I am right? I can’t see how. Of course I must concede that there are a variety of ways in which I can be and have been intellectually arrogant and egoistic; I have certainly fallen into this vice in the past, will no doubt fall into it in the future, and am not free of it now. Still, suppose I think the matter over, consider the objections as carefully as I can, realize that I am finite and furthermore a sinner, certainly no better than those with whom I disagree, and indeed inferior both morally and intellectually to many who do not believe what I do. But suppose it still seems clear to me that the proposition in question is true: am I really immoral in continuing to believe it?
Alvin Plantinga (Knowledge and Christian Belief)
Hume pointed out that human beings are inclined to accept inductive forms of reasoning and thus to take it for granted, in a way, that the future will relevantly resemble the past. As Hume also pointed out, however, it is hard to think of a good (noncircular) reason for believing that indeed the future will relevantly be like the past. Theisim, however, provides a reason: God has created us and our noetic capacities and has created the world; he has also created the former in such a way as to be adapted by the latter. It is likely, then, that he has created the world in such a way that indeed the future will indeed resemble the past in the relevant way.
Alvin Plantinga
Hume pointed out that human beings are inclined to accept inductive forms of reasoning and thus to take it for granted, in a way, that the future will relevantly resemble the past. As Hume also pointed out, however, it is hard to think of a good (noncircular) reason for believing that indeed the future will relevantly be like the past. Theisim, however, provides a reason: God has created us and our noetic capacities and has created the world; he has also created the former in such a way as to be adapted by the latter. It is likely, then, that he has created the world in such a way that indeed the future will indeed resemble the past in the relevant way. And thus perhaps we do indeed have a priori knowledge of contingent truth; perhaps we know a priori that the future will resemble the past.
Alvin Plantinga
The natural theologian does not, typically, offer his arguments in order to convince people of God’s existence; and in fact few who accept theistic belief do so because they find such an argument compelling. Instead the typical function of natural theology has been to show that religious belief is rationally acceptable.
Alvin Plantinga (God, Freedom, and Evil)
The conclusion that we were misled by our senses clearly involves several faculties: memory, induction…and sense perception itself
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Argument is not needed for rational justification. The believer is entirely within his epistemic right in believing, for example, that God has created the world, even if he has no argument at all for that conclusion..
Alvin Plantinga (Faith And Rationality: Reason and Belief in God)
Defeaters of course, are themselves prima facie defeaters, for the defeater can be defeated. Perhaps I spot a fallacy in the initially convincing argument; perhaps I discover a convincing argument for the denial of one of its premises; perhaps I learn on reliable authority that someone else has done one of those things. Then the defeater is defeated, and I am once again within my rights in accepting p. Of course a similar remark must be made about defeater-defeaters: they are subject to defeat by defeater-defeater-defeaters and so on.
Alvin Plantinga (Faith And Rationality: Reason and Belief in God)
My whole account of positive epistemic status, not just this example, owes much to Thomas Reid with his talk of faculties and their functions and his rejection of the notion (one he attributes to Hume and his predecessors) that self-evident propositions and propositions about one's own immediate experience are the only properly basic propositions.
Alvin Plantinga
My whole account of positive epistemic status owes much to Thomas Reid with his talk of faculties and their functions and his rejection of the notion (one he attributes to Hume and his predecessors) that self-evident propositions and propositions about one's own immediate experience are the only properly basic propositions.
Alvin Plantinga
Kant holds that the Dinge stand in causal or interactive relationship with us, taken as transcendental ego(s); and he also says that they are not in space and time. But on the radical subpicture, Kant (at least if his intellectual equipment is like that of the rest of us) should not be able to refer to the Dinge at all, or even speculate that there might be such things. He certainly shouldn't be able to refer to them and attribute to them properties of being atemporal and aspatial, or the property of affecting the transcendental ego(s), thereby producing experience in them He shouldn't be able to refer to us (i.e., as transcendental egos), claiming that we don't have the sort of godlike intellectual intuition into reality that would be required if we were to have synthetic a priori knowledge of the world as it is in itself. (On this picture, we might say, Kant's thought founders on the fact that the picture requires that he have knowledge the picture denies him.) If this picture were really correct, the noumena would have to drop out altogether, so that all that there is is what has been structured or made by us.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Kant holds that the Dinge stand in causal or interactive relationship with us, taken as transcendental ego(s); and he also says that they are not in space and time. But on the radical subpicture, Kant (at least if his intellectual equipment is like that of the rest of us) should not be able to refer to the Dinge at all, or even speculate that there might be such things. He certainly shouldn't be able to refer to them and attribute to them properties of being atemporal and aspatial, or the property of affecting the transcendental ego(s), thereby producing experience in them He shouldn't be able to refer to us (i.e., as transcendental egos), claiming that we don't have the sort of godlike intellectual intuition into reality that would be required if we were to have synthetic a priori knowledge of the world as it is in itself. (On this picture, we might say, Kant's thought founders on the fact that the picture requires that he have knowledge the picture denies him.) If this picture were really correct, the noumena would have to drop out altogether, so that all that there is is what has been structured or made by us.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Now Kant apparently intends these antinomies to constitute an essential part of the argument for his transcendental idealism, the doctrine that things we deal with (stars and planets, trees, animals and other people) are transcendentally ideal (depend upon us for their reality and structure), even if empirically real. We fall into the problem posed by antinomies, says Kant, only because we take ourselves to be thinking about things in themselves as opposed to the things for us, noumena as opposed to mere appearances...We solve the problem by recognizing our limitations, realizing that we can't think, or can't think of any real purpose, about the Dinge...I want to turn to the fatal objection. That is just that all the antinomical arguments are not at all compelling. Here I will argue this only for the premises of the first antinomy, exactly similar comments would apply to the others. In the first antinomy, there is an argument for the conclusion that 'The world had a beginning in time and is also limited as regards to space' (A426, B454); this is the thesis. There is also an argument for the antithesis: 'The world had no beginning, and no limits in space; it is infinite as regards both time and space' (A426, B454). And the idea...is that if we can think about and refer to the Dinge, then both of these would be true or would have overwhelming intuitive support...(Regarding the antitheis) In an empty time (a time at which nothing exists) nothing could come to be, because there would be no more reason for it to come to be at one part of that empty time than at any other part of it...The objection is that there would have been no more reason for God to create the world at one moment than at any other; hence he wouldn't or couldn't have created it at any moment at all. Again, why believe this?...This argument is like those arguments that start from the premise that God, if he created the world, he would have created the best world he could have; and they go on to add that for every world God could have created (weakly actualized, say) there is an even better world he could have created or weakly actualized; therefore, they conclude, he would have weakly actualized any world at all, and the actual world has not been weakly actualized by God. Again, there seems no reason to believe the first premise. If there were only finitely many worlds among which God was obliged to choose, the perhaps he would have been obliged somehow, to choose the best (although even this is at best dubious). But if there is no best world at all among those he could have chosen (if for every world he could have chosen, there is a better world he could have chosen), why think a world failing to be the best is sufficient for God's being unable to actualize it? Suppose a man had the benefit of immortality and had a bottle of wine that would improve every day, no matter now long he waits to drink it. Would he be rationally obligated never to drink it, on the ground that for any time he might be tempted to, it would be better yet the next day? Suppose a donkey were stranded exactly midway between two bales of hay: would it be rationally obliged to stay there and starve to death because there is no more reason to move the one bale than the other?
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Contemporary theologians and others sometimes complain that contemporary philosophers of religion often write as if they have never read their Kant. Perhaps the reason they write that way, however, is not that they have never read their Kant but rather that they have read him and remain unconvinced. They may be unconvinced that Kant actually claimed that our concepts do not apply to God. Alternatively, they may concede that Kant did claim this, but remain unconvinced that he was right; after all, it is not just a given of the intellectual life that Kant is right. Either way, they don't think Kant gives us reason to hold that we cannot think about God.
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
If we can't think about God, then we can't think about him; and therefore can't make statements about him, including statements to the effect that we can't think about him. The statement that we can't think about God-the statement that God is such that we can't think about him- is obviously a statement about God; if we can't think about God, then we can't say about him what we can't think about him.
Alvin Plantinga
According to the extended A/C model, we human beings typically have at least some knowledge of God. This is so even in the state of sin apart from regeneration. The condition of sin involves damage to the sensus divinitatis, but not obliteration; it remains partially functional. We therefore typically have some grasp god's presence and properties and demands, but this knowledge is covered over, impeded, suppressed. We are prone to hate God but, confusingly, in some way also inclined to love and seek him.
Alvin Plantinga
God is displeased with what I did” (divine testimony, said while reading the Sermon on the Mount).
Greg Welty (Alvin Plantinga (Great Thinkers))
The tree is in the yard beyond my window” (perception). “I had Cheerios for breakfast this morning” (memory). “2 + 2 = 4” (insight). “I’m thinking about philosophy right now” (introspection). “Abraham Lincoln was assassinated” (testimony). “Since 2 + 2 = 4, therefore 2 + 2 ≠ 5” (deductive inference). “Since the sun has always risen in the past, it will probably rise tomorrow” (inductive inference). By way of contrast, faith is a way of knowing that utilizes two cognitive capacities over and above those just named: a sense of the divine (what Calvin calls the sensus divinitatis in his Institutes, 1.3.1, first sentence), and a capacity to repose trust in divine testimony. Since the following beliefs would be acquired by using such capacities, these beliefs are acquired by faith: “God is an awesome Creator” (sensus divinitatis, said while contemplating a mountain). “God is displeased with what I did” (divine testimony, said while reading the Sermon on the Mount).
Greg Welty (Alvin Plantinga (Great Thinkers))
This argument is like those arguments that start from the premise that God, if he created the world, he would have created the best world he could have; and they go on to add that for every world God could have created (weakly actualized, say) there is an even better world he could have created or weakly actualized; therefore, they conclude, he would have weakly actualized any world at all, and the actual world has not been weakly actualized by God. Again, there seems no reason to believe the first premise. If there were only finitely many worlds among which God was obliged to choose, the perhaps he would have been obliged somehow, to choose the best (although even this is at best dubious). But if there is no best world at all among those he could have chosen (if for every world he could have chosen, there is a better world he could have chosen), why think a world failing to be the best is sufficient for God's being unable to actualize it? Suppose a man had the benefit of immortality and had a bottle of wine that would improve every day, no matter now long he waits to drink it. Would he be rationally obligated never to drink it, on the ground that for any time he might be tempted to, it would be better yet the next day? Suppose a donkey were stranded exactly midway between two bales of hay: would it be rationally obliged to stay there and starve to death because there is no more reason to move the one bale than the other?
Alvin Plantinga (Warranted Christian Belief (Warrant, #3))
Naturalism could, in fact, render naturalism itself irrational, as Alvin Plantinga argues, and as C. S. Lewis thought. Plantinga devotes chapter 12 of his work Warrant and Proper Function to this point.7 He writes in one place that “if metaphysical naturalism and this evolutionary account are both true, then our cognitive faculties will have resulted from blind mechanisms like natural selection. . . . Evolution is interested, not in true belief, but in survival or fitness. It is therefore unlikely that our cognitive faculties have the production of true belief as a proximate or any other function, and the probability of our faculties being reliable (given naturalistic evolution) would be fairly low.”8 If, then, naturalism negates knowing, then theism fosters it. Our native human capacity to know, Plantinga claims, “flourishes best in the context of supernaturalism in metaphysics.”9 I agree. So did C. S. Lewis.10 From this, we see why God must underwrite a credible epistemology.
Naugle, David K.. Philosophy (pp. 63-64). Crossway. Kindle Edition.
God could guide the course of evolutionary history by causing the right mutations to arise at the right time and preserving the forms of life that lead to the results he intends.
Alvin Plantinga (Science and Religion: Are They Compatible?)
I ascribe to others a wide variety of mental states, making fine and subtle discriminations between rather similar states, often ascribing to them states I have seldom if ever experienced myself; how could I do this on the basis of simple analogical reasoning from correlations between behavior and mental states in my own case? As a matter of fact, much of the relevant behavior is such that I can't observe it in my own case: facial expression, for example, is extremely important, and I typically can't observe what sort of facial expressions I am presenting to the world. Of course we have mirrors: but our ancestors, prior to the advent of mirrors, no doubt sometimes knew that someone else was angry or in pain. And we ourselves form these beliefs without adverting to mirrors; who among us carries one with him, or (when in the grip of strong emotion) remembers to consult it in order to establish correlations between his mental states and his facial expressions?...Indeed, tiny babies, presumably at an age at which they form little by way of beliefs of any sort, respond to human-face-like figures differently than to figures made of the same parts but scrambled. Fantz notes that 'It also appears that some of the capacity to establish spatial relations is manifested by the visual system from a very early age. For example, infants of 1-15 weeks of age are reported to respond preferentially to schematic face-like figures, and to prefer normally arranged face figures over 'scrambled' face patterns.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
Descartes observed that for any but the simplest kinds of argument, one must rely upon memory for knowledge of the conclusion. You clearly and distinctly see that the present step follows from earlier steps; but you have only your memory to testify to such facts as that earlier on you were able to see that S4—Sn themselves followed from prior steps. This dependence upon Exploring the Design Plan memory holds even for such simple arithmetical calculations as that 24 x 32 = 768. (Of course you can record the steps of the argument in your notebook; but then you will rely on memory for the belief that it was you who wrote them down and that you intended them to be an accurate written record of the argument.) And the same goes here for this purported argument to the best explanation. It isn't possible (for most of us, anyway) to hold in mind at one time the relevant phenomena to be explained, the most salient half dozen or so alternative explanations, the reasons (if any) why these explanations aren't as good as the favored candidate, the reasons (if any) for thinking that there must be (or probably is) a good explanation of those phenomena, and finally the inference from the alleged bestness of the explanation in question to the truth of the memory beliefs in question.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
How do I know, prior to my knowing anything by way of memory, that these present phenomena have an explanation? By way of my knowledge that most phenomena (or most similar phenomena?) do? But so to think is to rely upon memory.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
What counts for warrant is whether memory beliefs typically result from the proper function of our cognitive faculties in an appropriate environment, whether the function of memory is to give us true belief about the past, and whether the design plan in this area is a good one. But the fact is (as we all believe) these conditions are all fulfilled. Memory beliefs, therefore, have warrant.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
When afflicted with pain, human beings cry out, or moan, or whine, or stoically grit their teeth; but no doubt we could have been so constructed that we would instead smile, or do a little dance, or stand on our heads. So suppose first that these correlations had in fact been quite different. Now of course properly functioning human beings find themselves inclined, when aware of B, to make the S ascription; but suppose further that we had been so constructed that (when functioning properly) we did not find ourselves inclined to make the S ascription upon being aware of B. Then, surely (under those conditions), it would not have been the case that someone who was aware of B had evidence for S. So it isn't necessary that anyone who is aware of B has evidence for S.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
What makes it right to form belief in that inductive manner is just the fact that that is how a properly functioning human being forms beliefs; and what makes projectable properties projectable is just the fact that properly functioning human beings project them. But given that these projections and beliefs meet the other conditions for warrant (given that these beliefs and projections are formed in an appropriate cognitive environment and that the modules of the design plan governing their production are successfully aimed at truth), that is sufficient for warrant. And given that the beliefs in question are held sufficiently firmly, it is also sufficient (along with truth) for knowledge.
Alvin Plantinga (Warrant and Proper Function (Warrant, #2))
How could there be truths totally independent of minds or persons?... How could the things that are in fact true or false—propositions, let’s say—exist in serene and majestic independence of persons and their means of apprehension? How could there be propositions no one has ever so much as grasped or thought of?
Alvin Plantinga
How could there be truths totally independent of minds or persons?... How could the things that are in fact true or false—propositions, let’s say—exist in serene and majestic independence of persons and their means of apprehension? How could there be propositions no one has ever so much as grasped or thought of?...Even if there were no human intellects, there could be truths because of their relation to the divine intellect. But if, per impossible, there were no intellects at all, but things continued to exist, then there would be no such reality as truth. The thesis, then, is that truth cannot be independent of noetic activity on the part of persons. The antithesis is that it must be independent of our noetic activity. And the synthesis is that truth is independent of our intellectual activity but not of God's.
Alvin Plantinga
If the collecting or thinking together had to be done by human thinkers, or any finite thinkers, there wouldn't be nearly enough sets - not nearly as many as we think in fact there are. From a theistic point of view, the natural conclusion is that sets owe their existence to God's thinking things together
Alvin Plantinga
Many think of sets as displaying the following characteristics (among others): (1) no set is a member of itself; (2) sets (unlike properties) have their extensions essentially; hence sets are contingent beings and no set could have existed if one of its members had not; (3) sets form an iterated structure: at the first level, sets whose members are nonsets, at the second, sets whose members are nonsets or first level sets, etc. Many (Cantor) also inclined to think of sets as collections--i.e., things whose existence depends upon a certain sort of intellectual activity--a collecting or 'thinking together' (Cantor). If sets were collections, that would explain their having the first three features. But of course there are far to many sets for them to be a product of human thinking together; there are many sets such that no human being has ever thought their members together, many that are such that their members have not been thought together by any human being. That requires an infinite mind--one like God's.
Alvin Plantinga