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The theory page groups 200 quotes under one canonical topic hub so readers and answer engines can cite a stable source instead of fragmented search results.

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It will be seen how subjectivism and objectivism, spiritualism and materialism, activity and suffering, only lose their antithetical character, and thus their existence, as such antitheses in the social condition; it will be seen how the resolution of the theoretical antitheses is only possible in a practical way, by virtue of the practical energy of men. Their resolution is therefore by no means merely a problem of knowledge, but a real problem of life, which philosophy could not solve precisely because it conceived this problem as merely a theoretical one.

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If someone were to propose that the planets go around the sun because all planet matter has a kind of tendency for movement, a kind of motility, let us call it an __omph,_ this theory could explain a number of other phenomena as well. So this is a good theory, is it not? No. It is nowhere near as good as the proposition that the planets move around the sun under the influence of a central force which varies exactly inversely as the square of the distance from the center. The second theory is better because it is so specific; it is so obviously unlikely to be the result of chance. It is so definite that the barest error in the movement can show that it is wrong; but the planets could wobble all over the place, and, according to the first theory, you could say, __ell, that is the funny behavior of the __omph.

RF
Richard Feynman

The Meaning of It All: Thoughts of a Citizen-Scientist