道德的营养不良和精神的中毒对人的心灵的危害，正如身体的营养不良对于身体健康的危害一样。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

The stock market is filled with individuals who know the price of everything, but the value of nothing.

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

I’m not perfect, but I’m always me.

Success is nothing if you don't have the right people to share it with.