Combinatorics is like the art of counting without actually counting.

I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.

"In the end, we are all just stories waiting to be told."

人们应该追求他们热爱的事情。这会让他们比任何其他事情都更快乐。

我并不是一回到自行车上就赢了。有很多起伏，有好日子也有坏日子。

It's not about being the best, it's about being better than you were yesterday.