Being a detective is like being a scientist. You have to notice things other people don’t notice.

The key to credible causal inference is not just the method, but how well the method fits the question at hand.

一个人越是忘记自己——通过投身于一项事业或爱另一个人——他就越是人性化。

知道自己不知道什么比聪明更有用。