I don't believe in diversification. I prefer to concentrate on a few good ideas.

There is no such thing as a special category of science called applied science; there is science and its applications, which are related to one another as the fruit is related to the tree that has borne it.

P与NP问题是计算机科学中最重要的一个问题之一。

【讲解】：人格高尚的人不可用小事情考验他，却可以委以重任；人格低下的人不可委以重任，却可用小事情考验他。