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

我们必须设计适应人类行为的技术，而不是反过来。

In mathematics, you don't understand things. You just get used to them.

每一种化学结合完全且仅仅依赖于两种对立的力量，即正电和负电。