创新不仅仅是关于新产品；而是重新思考整个客户体验。

A key insight in learning theory is that the complexity of a hypothesis class is crucial for generalization.

You can only find out what you actually believe (rather than what you think you believe) by watching how you act. You simply don’t know what you believe, before that. You are too complex to understand yourself.

"To be a spy is to live in a world of constant doubt and suspicion."

我不能演戏，因为戏剧不是真实生活，而且里面充满了做毫无意义事情的人。