Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.

未来的竞争，不是产品的竞争，而是服务的竞争。

每个人自己的满足是他关注的一切的中心。

To write a good love letter， you ought to begin without knowing what you mean to say， and to finish without knowing what you have written.