Natural experiments are a powerful tool for understanding causal relationships in the real world.

我感到很幸运能够做我喜欢的事情。

交易中最重要的是保护你的资本。

大胆梦想，努力工作，永远不要让任何人黯淡你的光芒。

I don't play for the records. They come naturally and the only thing that matters is that the team wins.

"Every observation we make is a step closer to understanding the cosmos."

我是一个喜欢特别的人。

书籍是释放我们改变潜力的钥匙。

写作不仅仅是讲述一个故事；它是捕捉人性的本质。

Freedom does not consist in any dreamt-of independence from natural laws, but in the knowledge of these laws, and in the possibility this gives of systematically making them work towards definite ends.