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.

... the winner is the one who believes in victory more.

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.

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.

We only have one life and one body to care of, and we better do it right. You never know what tomorrow may bring and so we better live this life the best we can and be grateful for everything we have.

My father had never watched tennis, never liked tennis too much. He said, 'OK, we buy a racket, we watch together,' because we didn't know anything. It was a process of learning together that made it more interesting.

I had to know at least two languages.