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

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

The beauty of mathematics only shows itself to more patient followers.

你和上帝之间唯一的区别是你忘记了自己是神圣的。

唯一能够拯救人类的是合作。

生存下来的不是最强壮的物种，也不是最聪明的物种，而是对变化反应最迅速的物种。

I'm not a person who looks back and thinks, 'I wish I'd done that differently.'