It’s not the world that’s cruel. It’s the people in it.

领导力就是让他人因为你的存在而变得更好，并确保这种影响在你离开后依然持续。

The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.

Every perception is a symphony of the nervous system.

There's nothing more American than a coal miner.

The beauty of a mathematical proof lies in its simplicity and inevitability.