That's when you've got to grit your teeth and hang in there and try and find a way to win when you're not playing your best tennis - that's what I can be proud of

Even when I was No. 1 in the world, I was taking it one match at a time. I never was a player to look too far ahead, the way draws can pan out.

When I go out to play, I still believe I'm as good as anyone out there. I don't have to prove anyone wrong. I know what I've done and how well I can play.

I'm fortunate: I can play as long as I want to play. There's no coach or trainer who is going to say to me that I'm dropped or sacked, it's time to move on. I can play as long as I want to play.

Matches are won and lost so many times in the locker room.

When I was a kid in Adelaide, I dreamed of becoming No. 1 in the world, winning a grand slam and the Davis Cup for Australia.

I was lucky enough to win the Davis Cup in my first year in 1999. I won my first slam at the U.S. Open in 2001 and became world No. 1 later that year. By the age of 20, I'd done it all.

I'm not a guy who needs to read motivation books.

Everyone has to call 'time' at some stage.

That's what you do all the hard work for, to play in situations that put your body through gruelling times. If you're not up to it, pull out.

I'm one injury away from hanging up the racket at any time.

There is a requirement to ensure the withdrawal takes place in a civilized manner. We will be able to show the world we deserve independence and freedom.

God, I can push the grass apart and lay my finger on Thy heart.

It makes a great deal of difference whether one wills not to sin or has not the knowledge to sin.

Every fellow is really two men -- what he is and what he might be; and you're never absolutely sure which you're going to bury till he's dead.

As free and crazy as we want to be, and how much we want to make the world a canvas, there's also a part of us that doesn't want to make any mark.

Mothers always think their children are prettier than they really are, and mine has always told me I look like Tom Cruise.

You've got to work things out in the cloakroom, and when you've got them worked out, you can debate a little before you vote.

I like to be buttoned onto tradition. The thing is to improve it, twist it and mold it; to make something new of it; not to deny it. The riches of history can be plucked at any point.

My father carries around the picture of the kid who came with his wallet.

It took a couple of hundred million years to develop a thinking ape and you want a smart one in a lousy few hundred thousand?