"We come now to the question: what is a priori certain or necessary, respectively in geometry (doctrine of space) or its foundations? Formerly we thought everything; nowadays we think nothing. Already the distance-concept is logically arbitrary; there need be no things that correspond to it, even approximately."

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Source: Einstein from 'B' to 'Z'. Book by John Stachel, p. 5, 2001.

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Albert Einstein

Physicist

Albert Einstein was a theoretical physicist known for developing the theory of relativity, which transformed our understanding of space, time, and energy.

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