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。

Paper can be permanent if you respect its characteristics and design accordingly.

You never know what worse luck your bad luck has saved you from.

Love is not about possession. It's about memory.

The most dangerous phrase in business is "We've always done it this way."

唯一的出路就是穿过去。