我不与任何人竞争，只与自己竞争。我最大的对手就是我自己。
I don’t compete with nobody but myself. My biggest competition is me.
When you do something best in life, you don’t really want to give that up – and for me it’s tennis.
"El arte de escribir es el arte de descubrir lo que uno cree."
我不是说唱歌手，我是一个改变游戏规则的人。
The true cost of energy must account for both its production and its legacy.
"The only true wisdom is in knowing you know nothing."
我总是相信，最重要的不是成为最好的，而是比昨天更好。