自信是关键。如果你不相信自己,别人也不会相信你。
如果你不做一些疯狂的事情,那么你就是在做错误的事情。
我不是为了纪录而打球。我打网球是因为我爱它。
Strategy is not about being better at what you do; it's about being different in what you do.