A proof is a device for convincing someone else that a mathematical statement is true.

我们的生命有限，而知识却是无限。以有限的生命去追求无限的知识，就会精疲力尽；既然如此还去追求知识，那就只剩疲困了。做好事不贪图名利，不做不好的事触犯法律，把顺着自然规律作为常法，就可以保护自身，保全天性，养护精神，安享天年。

真正的领导力意味着即使在事情出错时也要承担责任。

Music is my refuge and also my battlefield.

The next generation of scientists will solve problems we can’t even imagine today.

In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.

学习数学的唯一方法就是做数学。