For me, there's never any bad blood - unless you do something to me.

Sometimes success needs interruption to regain focus and shake off complacency.

I was very aggressive as a child. At primary school in London my attitude was 'If you don't do what I say, I'll knowk you out', and I was eventually expelled for fighting.

Recently I donated money to the establishment of the Muhammad Ali Foundation in Louisville. I regard that as a kind of payback. He smoothed the way for us. He wasn’t just a great person who had conviction, but made the sport of boxing great. He was the first superstar, he made our stock rise. Without him we wouldn’t have earned so much. Americans from every walk of life have contributed to the foundation: Bill Clinton, Angelina Jolie, Brad Pitt. Unfortunately I was the only American athlete to make a donation. There’s not enough respect in our business.

I wanted to prove I was the best fighter in the world.

I don't see where Tyson Fury has boxed anybody of Wladimir's [ Klitschko] calibre to be able to get in the ring with Wladimir and do well.

There is just one rule about boxing: never bet on the white guy.