I can choose whoever I want, in MMA things change very rapidly, sometimes you don't know what'll happen and there's a guy that upsets everybody. I could fight who the fans would like me to fight the most. For me that's important.

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.

When I go on vacation I just like to do nothing - just hang out at the beach, go eat the best restaurants, and do nothing.

I’m a martial artist, and I don’t train because I have a fight; I train because it’s my lifestyle, and I’ll train every day if I’m not hurt.

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.

Because Conor McGregor is so confident - he goes there 'I'll beat this, I will do that' - If I would be his coach I will tell him all the time, behind closed doors, how dangerous [Nate] Diaz is and how much of a war this fight will be and how painful, and long, and uncomfortable it would be, and to get prepared for the worst day of his life.

I've started late, I was 19 years old. I've trained with Victor Zilberman - he's a Russian-Jewish from Moldova. His son David who is coaching me represented Canada in the Olympic games. There were a lot of very good wrestlers there and they took me underneath their wing when I was young.