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v. It cannot be many, because the many is made up of additional ones, so that since the one does not exist, the many do not exist either.
(c) A mixture of Being and Not-Being is impossible. Therefore, since Being does not exist, nothing exists.
II. If anything exists, it is incomprehensible. If the concepts of the mind are not realities, reality cannot be thought; if the thing thought is white, then white is thought about; if the thing thought is non-existent, then non-existence is thought about; this is equivalent to saying that “existence, reality, is not thought about, cannot be thought.” Many things thought about are not realities: we can conceive of a chariot running on the sea, or a winged man. Also, since things seen are the objects of sight, and things heard are the objects of hearing, and we accept as real things seen without their being heard, and vice versa; so we would have to accept things thought without their being seen or heard; but this would mean believing in things like the chariot racing on the sea. Therefore, reality is not the object of thought, and cannot be comprehended by it. Pure mind, as opposed to sense-perception, or even as an equally valid criterion, is a myth.
III. If anything is comprehensible, it is incommunicable. The things which exist are perceptibles: the objects of sight are apprehended by sight, the objects of hearing by hearing, and there is no interchange; so that these sense-perceptions cannot communicate with one another. Further, that with which we communicate is speech, and speech is not the same thing as the things that exist, the perceptibles; so that we communicate not the things which exist, but only speech; just as that which is seen cannot become that which is heard, so our speech cannot be equated with that which exists, since it is outside us. Further, speech is composed from the percepts which we receive from without, that is, from perceptibles; so that it is not speech which communicates perceptibles, but perceptibles which create speech. Further, speech can never exactly represent perceptibles, since it is different from them, and perceptibles are apprehended each by the one kind of organ, speech by another. Hence, since the objects of sight cannot be presented to any other organ but sight, and the different sense-organs cannot give their information to one another, similarly speech cannot give any information about perceptibles. Therefore, if anything exists and is comprehended, it is incommunicable. (Sextus Empiricus 1.3/Freeman, 128-129, fragment 3/Baird, 45-46)
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