Integrity is the foundation of an enterprise, losing it means losing everything.

There is no death, daughter. People die only when we forget them.

做数学就是同时参与创造和发现的行为。

The interplay between local and global phenomena is a recurring theme in number theory.

选择那些傻瓜也能经营的企业——因为迟早会有傻瓜来经营它。