I realized that with hard work, the world was your oyster. You could do anything you wanted to do.

If you can react the same way to winning and losing, that's a big accomplishment.

Of all my achievements in tennis, I'm probably as proud of my record on clay courts as any of my Wimbledon, U.S. Open or French singles titles.

Losing hurts me. I was determined to be the best.

Being famous before you've formed your personality, before you have that self-esteem, is dangerous.

If you can react the same way to winning and losing, that's a big accomplishment. That quality is important because it stays with you the rest of your life, and there's going to be a life after tennis that's a lot longer than your tennis life.

Ninety percent of my game is mental. It's my concentration that has gotten me this far. I won't even call a friend on the day of a match. I'm scared of disrupting my concentration. I don't allow any competition with tennis.