你不必理解所有事物才能去爱它。

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

Surround yourself with people who challenge you, not just agree with you.

I don’t fear anyone, but I respect everyone.

Each time you reach out to people， bring them a blessing； then they’ll be happy to see you when you bring them a problem.

对任何思考者来说，最大的挑战是以一种允许解决的方式表述问题。

真相并不总是美丽的，但对真相的渴望却是美丽的。

We don't make objects, we make places.