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。
The best way to learn econometrics is by doing—working with real data and real problems.
The strongest people are those who have been through the most.
生活中最重要的问题，大多数情况下，实际上只是概率问题。
The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.
过去并未死去；它甚至还未过去。
我们不仅要追求技术的领先，更要追求技术的实用性和普及性。
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.
如果不是现在，那是什么时候？如果不是我，那会是谁？
我们都被自己的记忆所囚禁，而自由的关键在于理解它们。