领导力意味着为了更美好的明天而在今天做出艰难的决定。

我们开采的每一块煤都在为某个家庭点亮灯光。

To do things with words is not a special kind of doing， but a special kind of speaking.

保守秘密的最好方法是永远不要有秘密。

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.

I think the most important thing is to be true to yourself and to be honest with yourself.