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

You have to be willing to fail, to be wrong, to start over again with lessons learned.

"The key to success is to focus on goals, not obstacles."

如果行善不是发自内心，那就不会长久。比如被捐款、被做义工等等，都是一锤子买卖，因为不是他自愿的。