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.
I think the most important thing for a filmmaker is to have a vision and to be able to communicate that vision to others.
释义：追求的过程本身比结果更能定义幸福。