I'd rather lose an argument than get into a long discussion in order to win it.

As a tennis player you can win and you can lose, and you have to be ready for both. I practised self-control as a kid. But as you get older they both - winning and losing - get easier.

You just try to play tough and focus point for point. Sounds so boring, but it's the right thing to do out there.

I'm not the best player in the history of tennis. I think I'm amongst the best. That's true. That's enough for me.

My tennis is aggressive, though I wouldn't say that it's more physical than technical. I rely more on technique than physique, but being physical is always a help to me.

Some people get very confused about my game. They think it's better if the court is slow, because I have a good defence. But the faster it is, the better for me. My spin is more painful for my opponents, my aggressive game works better.

Don't think about being the number one in the world, try instead to get through today's program as well as you can. Then we will see whether one day you'll end up as number one or number 100.