Every mathematical theorem is a story waiting to be told, a mystery waiting to be unraveled.

The clouds over the land now rose like mountains, and the coast was only a long green line with the gray blue hills behind it. The water was a dark blue now, so dark that it was almost purple.

最强大和持久的品牌是从内心建立的。它们是真实和可持续的。它们不是由营销部门制造的。

The best way to be successful is to help others succeed.

市场永远在变，唯有坚持品质才能立于不败之地。

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。