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

Tennis is a game of angles. You never have time to figure the angles. It's practiced. It's so practiced that it becomes an instinct. You just know where to put the ball. You just feel it. It has been computed into your brain so many times ­ it is there.

It's very important to take tennis to the people. For young people, they get to see the best in the world.

I think self-awareness is probably the most important thing towards being a champion.

I have a lot to say, and if I'm not No. 1, I can't say it.

Every generation I think gets better usually [in tennis].

My whole life has been about equal rights and opportunities. For me it really goes back to the health of mind, body and soul.