数学家的模式，就像画家或诗人的模式一样，必须是美丽的；思想，就像颜色或文字一样，必须以和谐的方式结合在一起。

The iron rule of nature is: you get what you reward for. If you want ants to come, you put sugar on the floor.

Education: the path from cocky ignorance to miserable uncertainty.

The most important thing is to enjoy your life—to be happy—it's all that matters.

自私是永远存在的。