"Memory is a strange thing. It doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter. It creates a picture, but it's not always the same picture."

多项式时间归约的概念对于理解NP完全问题的结构至关重要。

如果罗马人被迫先学习拉丁语，他们就永远没有时间去征服世界。

The best way to be successful is to be patient.

I'm interested in the line where life becomes death.