"In times of crisis, true leaders emerge by making tough decisions with conviction."

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

你只活一次，但如果你做得对，一次就足够了。

真正的学者不在于知识渊博，而在于热爱真理并真诚追求。

"We are all our own graveyards I believe; we squat amongst the tombs of the people we were."