纵然伤心，也不要愁眉不展，因为你不知是谁会爱上你的笑容。

做数学就是参与发现与猜想、直觉与灵感的过程。

The auto industry is undergoing its most profound transformation in a century.

It has always been easy to hate and destroy. To build and to cherish is much more difficult.

The best leaders are those who listen more than they speak.

悲剧是我割破了手指。喜剧是你掉进下水道淹死了。