Everything is tennis for me, it's my career and it's entertainment, but it's also a business.

Some people say I have attitude - maybe I do... but I think you have to. You have to believe in yourself when no one else does - that makes you a winner right there.

I don't focus on what I'm up against. I focus on my goals and I try to ignore the rest.

Just believe in yourself. Even if you don't, pretend that you do and, at some point, you will.

My motto is: I'm alive, so that means I can do anything.

In my mind, I'm always the best. If I walk out on the court (and) I think the next person is better, I've already lost.

Of course, I want to be number one. But being happy and healthy is the most important thing.

Tennis is mostly mental. Of course, you must have a lot of physical skill, but you can't play tennis well and not be a good thinker. You win or lose the match before you even go out there.

When you lose, you're more motivated. When you win, you fail to see your mistakes and probably no one can tell you anything.

In the sports arena I would say there is nothing like training and preparation. You have to train your mind as much as your body.

If I cared deeply about what people thought of me, I probably would have never made it out of Compton, California.

If the creation is separated from the creator, the creation will die

Who apart From ourselves can see any difference between Our victories and our defeats?

I set out to be the best and I am.

I felt like I had proof that not all days are the same length, not all time has the same weight. Proof that there are worlds and worlds and worlds on top of worlds, if you want them to be there.

The soul exceeds its circumstances.

Sometimes funerals can be good. It reunites you with your cousins you haven't seen in a while.

It never ceases to amaze me the lengths that some people will go to to try and speak to me or meet me.

Everything is worth more when you have to earn it.

I think his karma became to serve in nature and not to serve in the world, while I think my karma is to be in the world.

2010 was my best season so far but I think I can get better at everything.