Nobody had a life quite like Muhammad Ali. He won an Olympic Gold Medal at 18, the world heavyweight championship at 22. He was charismatic, hugely talented, a gifted self publicist who titled himself modestly as 'The Greatest ' He put his career and whole future at risk when he refused the draft for the Vietnam War and took the Muslim faith. His stand on Vietnam cost him his ring career and he was banned for three years. From being a world champion - he became an outcast. When he got his boxing license back he won the title again and his fights became world events watched by millions. His...