工具变量的美妙之处在于它们让我们以新的视角看世界。

控制的艺术在于处理未知和不可预测的事物。

The silence of Marcel Duchamp is overrated.

"The only way to do great work is to love what you do."

Treat every problem with reason.

国君自以为神圣聪明，而不去咨询官吏，自以为国家安定强大，而不注重防守，周围的邻国图谋侵略他却不知道戒备。 

If you're not willing to take risks, you'll never achieve anything great.

The most important thing in auction design is to create an environment where bidders feel comfortable revealing their true valuations.