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

法律义务不仅仅是道德义务加上制裁。

Train people well enough so they can leave, treat them well enough so they don't want to.

In science, we must be interested in things, not in persons.

在必要时，一个国家杀死暴君的权利永远不应受到质疑。