Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

能够想象任何事的人，可以创造不可能。

艺术作品是与无限的对话。

科学的进步不仅通过知识的积累来衡量，还通过提出新问题的能力来衡量。

一本书永远是通往另一个世界的敞开之门。