一个人是危险的，一个没有什么可失去的人更危险。

反射比物体本身更有趣。

In times of crisis, the true test of leadership is not just navigating the storm but emerging stronger on the other side.

The most important thing in communication is hearing what isn't said.

Science is the knowledge of consequences, and dependence of one fact upon another.

戒烟很容易，我已经戒了一千次。