Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.

If your art doesn’t challenge you, it won’t challenge anyone else.

The art of leadership is saying no, not yes. It is very easy to say yes.

知识的最大敌人不是无知，而是知识的幻觉。

每个人都重要，否则没有人重要。