困难面前不退缩，责任面前不推诿。

过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。

The past is not a static thing. It moves and shifts with us.

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.

Innovation is the key to staying ahead in a competitive industry.

最好的感觉是当你知道自己做得一切正确，赛车状态完美的时候。