People say I'm around because I have a lot of heart, but I know all the heart in the world couldn't have helped me if I wasn't physically fit.

[In the modern game] you're either a clay court specialist, a grass court specialist or a hard court specialist... or you're Roger Federer...

I was raised by two women, and that laid the groundwork for the way I treat 'em: with the utmost respect and admiration.

I've been kicked in the teeth more times in tennis than the law ought to allow.

With everything else that would swirl around me when I got involved in it, tennis was my main concern.

People don't seem to understand that it's a damn war out there. Maybe my methods aren't socially acceptable to some, but it's what I have to do to survive. I don't go out there to love my enemy. I go out there to squash him.

Tennis was never work for me, tennis was fun. And the tougher the battle and the longer the match, the more fun I had.