Tennis has given me everything, and I want to give something back.
网球给了我一切,我想回馈一些东西。
The only limits in life are the ones you set for yourself.
最终,我们记住的不是敌人的话语,而是朋友的沉默。
The world is not a pleasant place to be, but it is the only one we have.
成功不是幸福的关键。幸福是成功的关键。如果你热爱你所做的事情,你就会成功。