You have to wake up and you have to run if you want to survive.

You know why I want to win? Because of 15,000 reasons inside of the tennis court.

I can improve it a little bit. But it's my head, it's the way I am. So at the end of the day, I will be who I am and I will win how much I can win.

You can find flaws in Agassi and Sampras, but Federer has none.

I pay the bills, I pay for everything.

Never give up. Last year I was trying to give up but I couldn't.

Don't get too excited when I am winning, and don't get too depressed when I am losing. Just keep it cool.