You cannot always control what goes on outside, but you can always control what goes on inside.

In order to write about life first you must live it.

It is the user who should parameterize procedures, not their creators.

忠于自己，永远不要让别人说的话分散你对目标的注意力。

I don’t want to be remembered just as a tennis player. I want to be remembered as a good person.

The more you know, the more you realize how little you know.