The most important thing in communication is hearing what isn't said.

我想我只有一个选择：要么忙着生存，要么忙着死。

证明是一种用于使他人相信数学陈述为真的工具。

Every mathematical problem has a solution; it just takes time and creativity to find it.

You can't direct a film unless you know what the end is going to be.