领导力就是做出艰难的决定并坚持到底，即使这些决定不受欢迎。

做你自己，没有人比你更好。

I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.

地理学的研究是对地球作为人类居住地的研究。