You can train your mental strength just like you train your body. If your body looks fit or ripped, it looks strong, and you can flex your muscles. So, physically, you have a certain strength. Mentally, it's the same thing. You can train your psychological strength.

In Soviet times the border was closed so we couldn't get out of the country, and I had been reading Robinson Crusoe. I wanted to see the ocean, I wanted to see boats, I wanted to see black people, because we didn't have that in the Soviet Union. I was all excited by that stuff.

I prepare for my fights to well that I don't wanna give a chance to my opponent to crash my 'glass chin' as they say, so I'm knocking them in the way that I like.

This guy [Tyson Fury] really wants to prove himself in the ring and confirm what he keeps telling everyone, that he's the best in the world.

In the old days, when Muhammad Ali was fighting Ken Norton, Joe Frazier and George Foreman, there was a lot of excitement in the heavyweight division, I have to admit it.

After Chernobyl, thousands and thousands of people, if not millions, were given a death penalty and had to pay the price, our father among them.

It was like a musician playing notes. Everything we trained worked.