The best time to plant a tree was 25 years ago. The second best time is today.

Economic policies should be evaluated based on their real-world impact.

心理学必须研究思维和行为的适应功能。

The advantage of a ridiculously ambitious goal is that it sets the bar very high so even in failure it may be a success measured by the ordinary.

仅仅观察、实验、理论化和计算是不够的。人们还必须想象。

我写小说，人们说那是自传；我写自传，人们说那是小说。既然我这么笨，他们这么聪明，那就让他们决定是什么或不是什么吧。

世界是一本书，不旅行的人只读了一页。

The best players have the shortest memories.