My brother is a doctor and he will take care of post-traumatic stress. I think he'll do it for free.

Who's gonna win between two brothers? The Klitschko mother's gonna win because she said it won't happen.

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.

Exactly this type of people like you, at the beginning you're gonna be shy but later on you're gonna jump on a chair and you will scream hit him!

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

All of my fights are planned. I study my opponents from A to Z. How he walks, how he looks, how he speaks, gestures of the human body, which is a certain language that provides you lots of information if you have the ability to read it.