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

Is always the motivation to play better and better. But I think we are in a very good way to keep winning matches. That's most important thing for me.

I doubt about myself. I think doubts are good in life. The people who don't have doubts I think only two things-arrogance or not intelligence.

Hard courts are very negative for the body. I know the sport is a business and creating these courts is easier than clay or grass, but I am 100 per cent sure it is wrong.

Some people may learn something from the way I play tennis. But there are also players who are better than me in certain techniques.

The young athletes are supposed to mature, to improve their personality.

All sports are continuously developing, but what they all have in common is that the speed is increasing. That's also true of tennis; the ball is getting faster and faster.