"Tennis is a sport where you have to be strong mentally and physically, but the mental part is even more important."

天地本有固定的运行规律，日月本有自身的光明，星辰本有自身的序列，禽兽各有群体，树木本就直立，先生你也依仿自然天性行事，顺着自然规律前进，这已经是极好的了。

The best thing about golf is that no matter how good you get, you can always get better.

The probability of a response is determined by its reinforcement history.

Leadership is about making tough decisions today that will benefit everyone tomorrow.

I'm not afraid to fail. I'm not afraid to take risks.

To write is to make sense of the chaos.