What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.

The mystery of love is greater than the mystery of death.

A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.

创新不仅仅是关于技术；它是关于改变我们的生活方式。