"Tennis has to become everything to you if you're going to make it to the top. You have to live it."

"You have to want to play it all day, every day to get to the top."

"You will never have great tennis champions from England because of the cold and dark, but most of all because people only care about the sport for two weeks a year, and then they're on to something else. There's just not a great love of the sport there."

"Madonna has total control over her life, and not many women have that."

"I never really did Christmas before. Christmas Day? I mean - what's that? What's it all about? I was always flying on Christmas Day."

"I have this terrible dark side to my personality, which playing tennis keeps at bay."

"I did realise more than ever, after the stabbing, that tennis is a business - a tough business."

"People think I must have been so talented at an early age, but I don't know - was it talent or hard work? Who knows?"

"That's the key to success, isn't it? It has to be fun."

"It doesn't matter who is playing or how old they are. I just worry about what I can control. It doesn't give me more or less motivation."

"Tennis is so competitive. I guess that's the way it has to be."

"Did you know that Christmas Day is absolutely the best day to fly? It is. No crowded airports and crowded planes. I always flew to Australia. That's what Christmas was for me - a plane journey to the next tournament."