Sustainability isn't an option; it's a necessity for the future of our industry.

Open your eyes and see what you can with them before they close forever.

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.

以前的事不要再评说了，做完的事不要再议论了，过去了就不要再追咎。

I do not lack the courage to think a thought all the way through, and thus far I have encountered no thought that I have feared.

定义就是限制。