数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

艺术不仅仅是你所看到的，而是你所感受到的。

The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.

The moment you doubt whether you can fly, you cease for ever to be able to do it.

有时候你最害怕的事情就是能让你自由的事情。