我想我是不敢开心了，因为每次都会乐极生悲。

You can't look back, you just have to put the past behind you and find something better in your future.

创造就是记住。

The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.

自然实验是理解现实世界中因果关系的强大工具。

写作是一种生活方式，一种存在于世界的方式，一种理解世界的方式。