When you do something best in life, you don’t really want to give that up – and for me it’s tennis.

相信自己能做到，你已经成功了一半。

As to the gods, I have no means of knowing either that they exist or that they do not exist. For many are the obstacles that impede knowledge, both the obscurity of the question and the shortness of human life.

"Sometimes you have to surrender before you win."