'Of all the men I fought in boxing, Sonny Liston was the scariest.' - Muhammad Ali 'He's the meanest fighter that ever lived. No one's more intimidating. Not even myself.' - Mike Tyson 'Liston compares favorably with any of the heavyweights of the past. Any of them. When somebody asks me, 'How does Liston compare with Joe Louis?' I have to stop and think. So you know how good a fighter Liston is.' - Cus D'Amato 'Liston was the biggest puncher I ever fought.' - Chuck Wepner 'Sonny Liston stood up to me and actually made me give ground. No one has ever done that to me before or since.' - George Foreman 'If you got hit with that right hand, you wouldn't get up.' - Floyd Patterson 'Possibly the greatest left jab in the history of the heavyweight division. That left jab could go through brick walls.' - Bert Sugar 'Liston could scowl as hard as any man in or out of the ring. And, of course, he invented ...