I had to know at least two languages.

I had to listen to the classical music because it calms me down, calms my nerves down.

I like my groundstrokes, I can say. I like it. That's my game - I'm a groundstroke player and I play pretty aggressive.

I never wanted to change countries; it's something that is part of me.

I think luck falls on not just the brave but also the ones who believe they belong there.

I want the same thing I've wanted since I was 7 years old. I want to be No. 1.

I want to help children in Serbia and around the world so they can realize their dreams.

I'm happy, my family's happy, everything is going well.

I'm trying not to pay too much attention to the rankings because calculations can distract you.

I'm trying to enjoy my lie as much as I can and I know that tennis hopefully is going to be my life the next 10, 15 years.

I've had my ups and downs in my private life.

In order to stay where I am - and I want to do that - I have to stay dedicated as well as I have been before I became No. 1.

It gives me goose bumps and little butterflies in the stomach when I start thinking about the 'golden slam.'

It was very unusual for a boy to play tennis in my country.

Mostly the problems when I was down were caused by myself. There were times when I was not responsible enough or decisive enough.

My grandfather went through a lot in his life.

Nobody actually played tennis in my family.

People look up to me as somebody who is able to switch the image of our country from negative to positive.

Serbian history tells that the family is the most important thing and you have to stick with the family.

Tennis is my life, obviously; I need to focus, I need to win. But it's not the only thing. I'm not going to play forever.