From nothing to everything is a long way, from everything to nothing is one stop.

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

The whole key is to be honest with yourself, find the weak spots, work on it, get it done.

You lose or you win the fight - and anything in life - in your mind. I can look at how the person walks, how he speaks, his expressions. It's a wisdom. Eyes are the mirror of the soul. So you can read a lot.

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.

The challenge for me is his size because, for the first time in my career, I'll be meeting an opponent who is taller than me and has a longer reach.

Criticism is a great motivation. Failure is not an option to me.