世界是一本书，不旅行的人只读了一页。

The tragedy of great power politics is that even well-intentioned states are forced to act in ways that can lead to conflict and war.

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。

To listen is to allow the world to enter you.

The best architecture is both humble and heroic.

唯一能把我拉下来的人就是我自己，我不会再让自己把自己拉下来了。