数学是一门艺术，作为艺术家，你必须对自己诚实。

我认为最强大和持久的品牌是从内心建立的。它们是真实和可持续的。它们不是由营销部门制造的。

I don’t think you should spend much time being unhappy about the bad breaks. You get a lot of them, but you also get a lot of good ones. The thing to do is just to maximize your odds of using the good ones and minimizing the effects of the bad ones.

最重要的是关注用户，其他一切都会随之而来。