让中国人吃饱饭是我们这代科学家的使命。

Natural experiments can provide valuable insights into economic questions.

I don't need a reason to believe in myself.

在这个世界上，我该爱的人是我自己。闪耀的我，珍贵的灵魂。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

我认为我和吉姆值得称赞的主要原因是...选择了正确的问题并坚持研究它。

"The writer is a man who is always trying to create something new, something original, something that has never been seen before."

你必须相信自己的直觉，然后放手一搏。