Ever since that day when I was 11 years old, and I wasn't allowed in a photo because I wasn't wearing a tennis skirt, I knew that I wanted to change the sport.

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

It's just really important that we start celebrating our differences. Let's start tolerating first, but then we need to celebrate our differences.

In 1973, a woman could not get a credit card without her husband or father or a male signing off on it.

A champion is afraid of losing. Everyone else is afraid of winning.

The most important words that have helped me in life, when things have gone right or when things have gone wrong are 'accept responsibility.'

Pressure is a privilege ... it's what you do with it that matters.

No one changes the world who isn't obsessed.

The main thing is to care. Care very hard, even if it is only a game you are playing.

For me, losing a tennis match isn't failure, it's research.

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

Don't let anyone define you. You define yourself.

Champions keep playing until they get it right.

Pressure is a privilege - it only comes to those who earn it.

I have often been asked whether I am a women or an athlete. The question is absurd. Men are not asked that. I am an athlete. I am a women.

A girl didn't get an athletic scholarship until the fall of 1972 for the very first time.

The main thing is not a matter of wanting to win; the main thing is being scared to lose.

I can't stand to sing the same song the same way two nights in succession, let alone two years or ten years.

I never sing a song the same way twice.