Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands – it’s the upstairs that counts.
网球是一项心理游戏。每个人都健康,每个人都打出很棒的正手和反手——重要的是头脑。
I'm not a brand, I'm a human being.
It is the greatest happiness of the greatest number that is the measure of right and wrong.
What we learn from history is that people don't learn from history.