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.

When you're successful for so many years, the scariest part is that you're getting too comfortable because you've had so much success.

Mental strength is really important because you either win or lose in your mind. And I'm not solely talking about sporting matches, boxing events - anything you do, you do it first with your mental strength. And you can actually train and develop it, and I am responsible for what I'm saying because I have experience with that.

My father told and taught me that the word, can hit harder than the fist.

I have decided to make a personal message to David Haye. I want him to fight me, to be a man. I wish there will be enough excitement, pressure and courage for David Haye to fight me.

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

That's the most terrible mistake you can make: to relax. It's difficult to become a champion, but it's more difficult to maintain it for many years because you're getting too comfortable.