I Was Psychologically Sick For 3 Days Afterwards.

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

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

I'm playing right now a role, and the role is called the 'Heavyweight Champion of the World.' And it takes all of the time. And I love this role, and it takes a lot of attention for me for the sport, and I just don't want to lose the title, so that's why I have to stay focused and not become an actor.

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.

I never fought in my life outside of a ring.

I learned in my Ph.D. the discipline I needed to be successful. Most boxers are not that disciplined. They have talent, but the self-organization - the ability to schedule yourself and your priorities - is lacking. My studies were about the control of training on both the psychological and the physical side.