地理学是研究地球作为人类家园的科学。

What I remember above all about Harvard was being in the midst of so much energy and intelligence. It could be exhilarating, intimidating, sometimes even discouraging, but always challenging. It was an amazing privilege…and though I left early, I was transformed by my years at Harvard, the friendships I made, and the ideas I worked on.

There is no such thing as a small life. Every existence contains the universal.

当有人说它不是钱，而是事情的主旨，它就是钱。