But man is not made for defeat. A man can be destroyed but not defeated.

I don’t know what I want. I am inconsistent, non-committal, passive; I like the indefinite, the boundless, and I like continual uncertainty.

——2004年在南京航空学院上的演讲

Combinatorics is like the art of counting without actually counting.

世界上充满了神奇的事物，耐心地等待着我们的感官变得更加敏锐。