如果你不偶尔失败，说明你不够努力。

职业生涯是攀爬架，而不是梯子。

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

Success is not about the awards, it's about touching people's lives.

真相是，我们都在寻找某种东西，但我们不知道它是什么。