The world is full of people who will tell you what you can't do. You don't need them. You already know what you can't do. What you need is someone to tell you what you can.

农民最大的资产是耐心——大自然不会匆忙，但一切都会完成。

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

A great biography should be like a portrait that captures both the light and the shadow.