Security used to be an inconvenience sometimes, but now it's a necessity all the time.

I am not looking for perfection. I look for the best in me.

When one man becomes more important than the country he's supposed to be leading, this will always create a problem.

The whole idea of image is so confused. On the one hand, Madison Avenue is worried about the image of the players in a tennis tour. On the other hand, sports events are often sponsored by the makers of junk food, beer, and cigarettes. What's the message when an athlete who works at keeping her body fit is sponsored by a sugar-filled snack that does more harm than good?

The only people that really have a chance against Serena [Williams] are people that are strong, that can handle her power that move well, and that's a difficult combination.

What matters isn't how well you play when you're playing well. What matters is how well you play when you're playing badly.

Once you start believing in yourself, anything is possible.