I always listen, I ask children, I even ask adults in tennis, "What are your children playing?" And most of the time it's not tennis. It's pathetic.

If your partner wants to be private, you have to respect that.

I like to see what future generations are thinking about.

Any therapist will tell you that when you're ready, you will come out. To be outed means you weren't ready.

Martina and I went through a very bad five years. Everything's very good between us now, but it was a long haul.

I like entrepreneurial people; I like people who take risks.

Be bold. If you're going to make an error, make a doozy, and don't be afraid to hit the ball.