天文学的历史是一部视野不断扩展的历史。

If you want to grow, you must first learn to adapt.

Never compromise on safety - it's the cornerstone of our industry.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

中国的崛起代表了自冷战结束以来对自由国际秩序的最重大挑战。

In mathematics, you don't understand things. You just get used to them.

Every line I draw is a moral decision.