The best way to predict the future is to invent it.

I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.

I don't want to be a role model. I want to be a reference.

不要害怕失败，要害怕不去尝试。

The day I stop believing I can win is the day I'll stop playing tennis.