I think that there's only one nationality and one language in the sport, and you call it performance.

The whole key is to be honest with yourself, find the weak spots, work on it, get it done.

There is no money in this world that will make us fight.

I train six days a week for four to five hours a day. I like to keep the same schedule when I'm in camp for every fight.

My goal is not getting hit and to knock the other guy out. Some people might complain because they want to see boxers beat up on each other, but you cannot last long in professional boxing if you take a lot of punches.

Criticism is a great motivation. Failure is not an option to me.

I have a Ph.D. in philosophy and sports science. At 14, I went through this really tough Soviet training system. A lot of my roommates got psychologically broken or physically injured. Either you came through, or you were out. I made my Ph.D. work in the field of young athletes aged 14-19 because at this age any human is changing.