No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.

It's often safer to be in chains than to be free.

The best way to solve a problem is to think about it in a different way.

我从不买任何东西，除非我能给自己一个充分的理由为什么要买它。