Art is not what you see, but what you make others see.

To solve a mathematical problem is to uncover a piece of the universal puzzle.

The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

我不追随潮流。我创造潮流。

理论不应该试图解释所有事实，因为有些事实是错误的。