质量是企业的生命线，任何时候都不能放松。

互联网时代，速度就是生命。

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.

I am not interested in solving problems that are already solved.

"The past is never dead. It's not even past."