Acting is a craft that requires constant practice and dedication.

我从来不知道自己对某件事的看法，除非我读了自己写下的东西。

一个数学家的真正价值在于他们留下的问题。

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.