学习数学的唯一方法就是做数学。

I love to compete. That's what I do. That's why I work so hard at it.

You have to be thick-skinned in this business.

Freedom and order are not incompatible; truth is strength; free discussion is the very life of truth.  

The greatest glory is not in never falling, but in rising every time we fall.

写作的行为是一种乐观的行为。

Everymorning I jump out of bed and step on a landmine. The landmine is me. After the explosion, I spent the rest of the day putting the pieces together.