Once you've been number one, you can never be satisfied with less.

The great high of winning Wimbledon lasts for about a week. You go down in the record book, but you don't have anything tangible to hold on to. But having a baby -- there isn't any comparison.

Now that I'm losing some, I can see how tough I was -- the killer instinct, the single-mindedness, playing like a machine. Boy, that's what made me a champion.

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.

Ninety percent of my game is mental. It's my concentration that has gotten me this far.

I wanted always to appear strong and in control . . . .Then the cookie began to crumble.

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