一個人如果不講信用，不知道他怎么能立身處世？就像牛車沒有了輗，馬車上沒有了軏，還靠什么行走呢？
I'm not a person who likes to be in the spotlight all the time. I'm very private.
The joy of discovery is what drives mathematicians forward.
Success is not final, failure is not fatal: It is the courage to continue that counts.
The world is a fine place and worth the fighting for.
通往低碳未來的道路需要多種解決方案和方法。
We must build a world in which there shall be no economic domination.