系统不是一个生产系统，而是一个消费系统。

The world is full of people who have stopped listening to themselves or have listened only to their neighbors to learn what they ought to do, how they ought to behave, and what the values are that they should be living by.

——〈建国方略之一：孙文学说——行易知难〉，1919年5月20日

Happiness is not something ready made. It comes from your own actions.

朗兰兹纲领证明了数学抽象之美。

宇宙不仅比我们想象的更奇怪，而且比我们能够想象的更奇怪。