The most important thing in mathematics is to understand the concepts, not just to memorize formulas.

人类的所有成就都源于创造性幻想。那么我们没有权利轻视想象力。

我不需要任何人来完整我。

生存可以总结为三个字——永不放弃。这就是它的核心。只要继续尝试。

No man really knows about other human beings. The best he can do is to suppose that they are like himself.

知道自己不知道什么比聪明更有用。