生活是世界上最罕见的事情。大多数人只是存在，仅此而已。

我和其他积累了这种财富的人之间的主要区别在于，我主要对思想感兴趣，而不是赚钱。

The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given nature, but result from the social process which creates man.

The only way to achieve the impossible is to believe it is possible.

Mathematics is not a spectator sport. You have to do it to understand it.

历史是人类的集体记忆。

我们就是我们记住的东西。