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

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.

Tomorrow gets better if you get today better.

Each day, compel yourself to do something you would rather not do.

Marriage provides the solace of worked-on friendship and the joy of being known profoundly.

You don't have to believe that there was a King Arthur to get the significance of those stories, but Christians say we have to believe there was a Christ, or the miracles don't make sense.

I wondered what one wore to visit a vampire. The chic red sweater set didn't go so well with my darker hair, and I was afraid it might be construed as a flirtatious invitation to color me bloodier.

All great people glorify their history and look back upon their early attainments with a spiritualized vision.

Hinduism has absorbed the best of all the faiths of the world and in that sense Hinduism is not an exclusive religion.

Everything comes at a price. Everthing in your life. The question you have to ask yourself is, what price are you willing to pay?

You should command and demand the tenfold leverage on your dollars when you give it away as well.