The present is always changing, but the past is fixed.

诗是一种看世界的方式，而不仅仅是描述它。

阅读是不动的旅行，是在一生中活出千种生活。

I'm not a legend, I'm just a man who's lived his life.

In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.

最好的领导者是那些能够赋能他人去领导的人。

学习数学的唯一方法就是做数学。