中心地的等级越高，其服务的区域越大，此类中心地的数量越少。

"The best stories come from asking difficult questions, not providing easy answers."

The universe is a quantum computer.

In business, as in life, the choices we make define who we are.

写文章的方法，必须先确立大的方面，然后才能顾及小的细节。

语言是唯一的家园。