自然实验可以为经济问题提供有价值的见解。

失去一种语言就是失去一种看世界的方式。

万物有本然，终不为他者。

一对爱人婚前彼此非常了解或性格特别相似，这并不能说明他们婚后会幸福。他们往往是弄到后来距离越来越远，彼此烦恼。你既然得和这个人过一辈子，对他的缺点知道得越少越好。

The best way to measure how much you've grown isn't by inches or the number of laps you can now run around the track, or even your grade point average - though those things are important, to be sure.It's what you've done with your time, how you've chosen to spend your days, and whom you've touched this year. That, to me, is the greatest measure of success.

最好的投资是投资自己。