He'll go down as one of the guys who changed our sport in a lot of ways, not only the way he played the game, but also the way that he conducted himself on and off the court.

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.

If the young only knew if the old only could.

Acts that proceed from your calm center are always more effective than acts that proceed from fear, guilt, or anger.

Let the work speak for itself.

Most people are not going after what they want. Even some of the most serious goal seekers and goal setters, they're going after what they think they can get. Set your sights higher.

I think that as people and as humans, our social pattern is to always run away from problems... as humans in general.

Christ alone can save the world, but Christ cannot save the world alone.

The Lord who told me to take care of my people meant me to do it just as long as I live, and so I did what he told me.

Energetic action on debt would make a radical difference to the prospects of many of the poorest countries in the world, at no practical cost to creditor countries.

It's difficult to paint every day, and people who say they do, probably don't; it's a very demanding thing.

I can promise you that the Spirit is a lot more anxious to help you than you are to be helped.