Good and great are seldom in the same man.

the only thing we have to fear is fear itself.

学习速度是当今世界唯一可持续的竞争优势。

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

Stay Hungry. Stay Foolish. And I have always wished that for myself. And now, as you graduate to begin anew, I wish that for you. 

真正的挑战是让复杂的东西看起来简单。