Kyokoshin I've done most, but I competed in Sports Karate also, that's my style that I come from, and mixed with the wrestling that's how I got the takedowns.

I used my Karate footwork to control the distance, and I use is as a penetration drill that I do, this is my speciality, the way I penetrate on people, the explosiveness and the timing. It all started with Kyokoshin and Sports Karate.

My fear delivered one of the great lessons of my life: That someone without fear can’t push himself. He can’t get better. He can’t transform negatives into positives. He can’t open his world to creativity and invention, or even progress.

People often say, 'Ah, ultimate fighting is so violent,' but it's rooted in martial arts. Martial arts incarnate respect. You can't walk into a dojo and say to your sensei, 'Hey, salut tabarnac!' After every one of my fights I go and shake the hand of my opponent. I don't need to hate the other fighter to fight him well. It's a sport.

I am very honored and excited to be part of UFC 100, it's going to be the hardest challenge of my career so far and it's going to be pretty tough, I can't wait.

With discipline, belief, and the right knowledge, we become the best we can be.

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.