If you want to fly, you have to give up the things that weigh you down.

我是明天，或未来的某一天，我今天所建立的。我是今天，我昨天或前几天所建立的。

Success is measured not just by profits, but by the positive impact we have on the world.

指数基金消除了个股、市场板块和经理选择的风险。只剩下股市风险了。

自然实验是理解现实世界中因果关系的强大工具。