My motivation and aspiration is the same, being number one or being number five. So that's the truth. And my goal is the same - it's to always be happy playing, it's to enjoy the game and improve always.

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.

The US player Andy Roddick reaches speeds of 220 kilometers per hour when he serves. If I train with him every day, I will later be at an advantage against a player whose service crosses the net at 190 kilometers per hour.

If you are playing bad you are going to lose here, on clay, on ice, or on the beach.

Last four months were great for me, was probably one of the best four months of my career, playing unbelievable in the clay court season.

Anyone could become a star, but everyone must be a human being.

I am not a person who I am thinking about what I achieved or what I don't achieve. I am a person who try to enjoy the moment. That's what I do.