I would say that Roger Federer is pretty amazing. And Manny Pacquiao - he's such a tiny, little lightweight guy, but the way he fights makes people so excited.

Nobody is born as a champion. You have to earn it through hard work. Get started!

I've been doing this 26 years and have a lot of knowledge which will help me in the ring.

My height is an advantage, if I want to use it.

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.

He's been an inspiration for me since the Olympics 1996.

You can take your fitness seriously, but not yourself. That's the most difficult part: not to relax. That's the most difficult challenge I'm facing every fight.