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Letter "T" » Theory
«Einstein explained his theory to me every day, and on my arrival I was fully convinced that he understood it.»
«Generally, the theories we believe we call facts, and the facts we disbelieve we call theories»
«An ounce of action is worth a ton of theory.»
«If the Confederacy fails, there should be written on its tombstone: Died of a Theory.»
«It is a test of true theories not only to account for but to predict phenomena»
«If the facts don't fit the theory, change the facts.»
«He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.»
Author: Leonardo da Vinci
, Board of
, cast about
, cast on
«If Darwin's theory should be true, it will not degrade man; it will simply raise the whole animal world into dignity, leaving man as far in advance as he is at present»
«How empty is theory in the presence of fact»
«First, you know, a new theory is attacked as absurd; then it is admitted to be true, but obvious and insignificant; finally it is seen to be so important that its adversaries claim that they themselves discovered it»