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.

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.

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.

The most basic of all human needs is the need to understand and be understood. The best way to understand people is to listen to them.

If you want the world to be loving and peaceful, I'll give you my heart and soul. For the heart is a symbol of truth and caring

We are born to believe We can’t change a thing We can’t, and we never could. But before you believe The things you believeYou must understand To be understood.

Sometimes siblings can get in each other's space.

Let's do some comedy. I always like to add some comedy to my show. Those who've seen me before might know that.

A fragrance always combines femininity and sensuality.

The ancients, by their system of colonization, made themselves friends all over the known world; the moderns have sought to make subjects, and therefore have made enemies.

An idea that is confident always looks masculine.

My responsibility to myself, my neighbors, my family and the human family is to try to tell the truth.

We are cutting things kids like-music, art, and gym classes; stuff that kept me in school. This country can't survive without you kids. It's all about you kids.