I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.

You don’t have to pee on an electric fence to learn not to do it.

普遍来说，一个人的力量是他目前的手段，用来获得某些未来的明显好处。

NP中的每个问题都可以归约为可满足性问题，这是计算复杂性理论的基石。