Hope is not a feeling; it is a doable thing.

The elegance of a mathematical proof often mirrors the efficiency of the algorithm it describes.

Policy should be based on evidence, not ideology.

拥有众多军队不能得到军心，这和单人行动有什么区别呢？

大脑是一台不是为了理解自己，而是为了生存而组装的机器。它是一台做出导致生存的决策的机器。

The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.