Among thousands of people, you meet those you've met. Through thousands of years, across the boundless wilderness of time, you happen to meet them, neither earlier nor a bit too late. There is nothing to be said except to ask lightly, "Oh, you're here too?"

成功不是终点，而是一个持续改进和学习的过程。

It's easier to ask forgiveness than it is to get permission.

The art of doing mathematics consists in finding that special case which contains all the germs of generality.