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.
Happiness is not something ready made. It comes from your own actions.
The only way to discover the limits of the possible is to go beyond them into the impossible.
I don't believe in anything, and that gives me great freedom.