“The toughest opponent is me. A lot of times, you don't want to train. You don't want to box. Sometimes, life hits you to the point where you don't even want to live. You have to fight with that person. You have to make yourself wake up in the morning. You have to make yourself watch your weight. That's how I fight with that person.”

Ukrainian professional boxer

Oleksandr Usyk is a Ukrainian professional boxer. Born in 1987, he became one of the defining heavyweights of his era, and has 73 quotes on the site. Usyk was undisputed world champion at cruiserweight and later at heavyweight, a rare feat in the modern four-belt era. He was the first male boxer to become a three-time undisputed champion, and he also held the unified heavyweight title from 2021 until giving up his sanctioning body belts in June 2026. He remained undefeated when he relinquished those titles, and is still regarded as the lineal heavyweight champion.