我是自由的，无论周围有什么规则。如果我觉得它们可以忍受，我就忍受它们；如果我觉得它们太讨厌，我就打破它们。我是自由的，因为我知道只有我自己在道德上对我所做的一切负责。

历史学家既是侦探，也是讲故事的人。

Human activities have become a significant force shaping Earth's climate.

In business, the ability to adapt quickly to market changes is more valuable than any static advantage.

The world is not a puzzle to be solved, but a mystery to be lived.

每个人内心都承载着人类的所有时代。