Patience and tenacity of purpose are worth more than twice their weight of cleverness.  

学习计量经济学的最佳方法是通过实践——处理真实的数据和真实的问题。

我们都有多重身份——诀窍是拥抱它们全部。

The most important thing is to retain your identity and not try to be something you're not.

真相是一面镜子，反映出我们真正的样子。

最大的财富是满足于少量。