追求幸福不是要一直感觉良好，而是要朝着有意义的目标努力。

The most important part of teaching is to teach what it is to know.

今时今日我们真的所有东西都与美国的一模一样，当然，除了语言之外。

The whole is other than the sum of the parts.

Collaboration is key—no single organization can solve the world’s environmental challenges alone.