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

Even in the tropics it gets colder at night than you think. Pack warmly.

True leadership is about empowering others to achieve what they didn’t think was possible.

Quantum cryptography doesn't rely on the difficulty of mathematical problems, but on the fundamental laws of physics.

The Tour is won in the mind.

Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.

我不是在追赶潮流，我只是想做让人感觉舒服的音乐。

度过生活的唯一方法就是笑着度过它。你要么笑，要么哭。我更喜欢笑。哭会让我头疼。