我活在一个永远不想醒来的梦里。
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 most ordinary materials can become extraordinary through attention.
Mathematics is the art of giving the same name to different things.
You can’t change the past, but you can shape the future.
科学是一场马拉松,而不是短跑。