Sometimes I'm under the impression some of the fights happen that they shouldn't happen because a guy's cheating. Also, I think when something like this happen they should have not only a suspension but also monetary wise enforce a penalty. Maybe take the purse of the fighter to the other fighter.

When I train, I love to take time off and fly to the Natural History Museum or an exhibition. I just love that. When you know your past, it will help you with your future… That’s why most of my friends are not fighters. Most of my friends are nerds like me. That’s why I have a hard time finding a girlfriend. I need someone to talk science with. I’m married to my work right now. But you never know. One day I could wake up and just do something different. Life is so unpredictable.

It's not always the best team that wins the game it's the team that plays better.

For me there is no reason why to go up in weight class, because when you go up in weight class you have to fight bigger guys - then you have to train against bigger guys. The guys are not better, they're heavier, but it means you have more chance to get hurt.

I don't want to be an exception, because I was very outspoken about Performance Enhancing Drugs. It would be bad for my reputation if I would have an exemption [for doping test] - I don't want to have a free pass, I want to be like everybody else.

It's not about how you are when things go well, what defines you is how you are when you fail from an obstacle.

If you look good, you feel good, and if you feel good, you do good.