Every time, all the time, I'm a perfectionist. I feel I should never lose.

I'm not an overly ambitious person; I don't feel like I have to excel.

To be a tennis champion, you have to be inflexible. You have to be stubborn. You have to be arrogant. You have to be selfish and self-absorbed. Kind of tunnel vision almost.

Training the body to obey the mind as I have done differs from the more conventional method of getting the mind to obey the body.

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

Not every child is cut out for an individual sport.

If you're a champion, you have to have it in your heart.