I think that there's only one nationality and one language in the sport, and you call it performance.

I'm quite shocked by the recent British media stories about an alleged brawl between myself and Dereck Chisora. I am a professional prize fighter and let my fists do the talking only inside the ring. I don't want to comment on Chisora's psychological issues.

I don't care where people come from. It is not important to me. If you are good people will like you, if you're not, they won't. It is simple.

I always train and prepare with highest concentration and focus on my next opponent. To me, it does not matter what his name is.

Obsession is love in an extreme shape.

I respect the IBF obligation to fight Povetkin, but I would like the exception to fight David Haye. That is the only title the Klitschkos don't have. We have them all except the WBA, which is why Haye is such an interesting cookie for me to eat.

My brother is a doctor and he will take care of post-traumatic stress. I think he'll do it for free.