知识的唯一来源是经验。

最安全的做法是不违背良心。有了这个秘诀，我们可以享受生活，不害怕死亡。

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

你永远无法取悦所有人，所以不如做你自己。