Theory Quotes
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The theory of Communism may be summed up in one sentence: Abolish all private property.
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In theory, theory and practice are the same. In practice, they are not.
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Every theory of love, from Plato down, teaches that each individual loves in the other sex what he lacks in himself.
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A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.
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The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.
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A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability.
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If a theory can not be explained to a child, then the theory is probably worthless.
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In theory, there is no difference between theory and practice. But, in practice, there is.
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Creating a new theory is not like destroying an old barn and erecting a skyscraper in its place. It is rather like climbing a mountain, gaining new and wider views, discovering unexpected connections between our starting points and its rich environment. But the point from which we started out still exists and can be seen, although it appears smaller and forms a tiny part of our broad view gained by the mastery of the obstacles on our adventurous way up.
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When I'm judging a theory, I ask myself whether, if I were God, I would have arranged the world in such a way.
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The most beautiful fate of a physical theory is to point the way to the establishment of a more inclusive theory, in which it lives on as a limiting case.
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The most practical solution is a good theory.
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It is obvious, that theory alone, can never make a good artist; and it is equally obvious, that practice unaided by theory, can never correct errors, but must establish them.
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If quantum theory is correct, it signifies the end of physics as a science.
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The truth of a theory is in your mind, not in your eyes.
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If the facts don't fit the theory, change the facts.
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I have just got a new theory of eternity.
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A truly rational theory would allow us to deduce the elementary particles and not be forced to state them a priori.
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The classical example of a successful research programme is Newton's gravitational theory: possibly the most successful research programme ever.
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Even for practical purposes theory generally turns out the most important thing in the end.
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You cannot run a business, or anything else, on a theory.
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My theory is that balance is key - nothing in excess.
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In theory there is no difference between theory and practice. In practice there is.
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It has actually become very necessary in our time to rebut the theory that every firm and serious friendship is really homosexual.
