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Richard Feynman had to say this about energy in his 1961 lecture:
“There is a fact, or if you wish, a law, governing all natural phenomena that are known to date. There is no known exception to this law – it is exact so far as we know. The law is called the conservation of energy. It states that there is a certain quantity, which we call energy that does not change in manifold changes which nature undergoes. That is a most abstract idea, because it is a mathematical principle; it says that there is a numerical quantity which does not change when something happens. It is not a description of a mechanism, or anything concrete; it is just a strange fact that we can calculate some number and when we finish watching nature go through her tricks and calculate the number again, it is the same.”
All significant philosophers and scientists throughout history were in their own right, right if we consider the context, time, and place, the point from which they observed the world by the means available to them. If we understand this context, we know how much harder it was for them to decipher the world previously unknown, except as an experience without fundamental and deeper understanding. In this sense, all these philosophers and scientists were, in a way, “right,” even when they were “not” right. Correctness or wrongness of their ideas and opinions shall be measured more by how they helped our understanding and ideas developed directly from their thoughts. Even if they were in some way wrong, great ideas helped our ideas develop and allowed the formation and formulations of great ideas that will follow. Quality and potential of insights and ideas are more important than strict correctness without any potential.
Progress in human history would not be possible without following the traces of long-bygone giants (as Newton understood them). We can hardly produce any new important question that ancient Greek philosophers did not pose. The whole idea of Western philosophy, as it is, would not be possible without the ancient Greeks. This statement holds even when we talk about the modern era’s greatest philosophers, starting with Descartes and culminating in the works of the great German philosophers Leibnitz, Kant, Hegel, Schopenhauer, the Dutch Spinoza, and others. Almost all central questions or problems treated by these philosophers were already postulated, discussed, or touched, directly or indirectly, by the great ancient philosophers who paved the way for the others.
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