After fighting some of the fiercest bouts in boxing history against Joe Frazier and George Foreman, today Muhammad Ali faces his most powerful foe -- outside the boxing ring. Like many people, he battles an illness that limits his physical abilities, but as he says, "I have gained more than I have lost....I have never had a more powerful voice than I have now." Ali reflects on his faith in God and the strength it gave him during his greatest challenge, when he lost the prime years of his boxing career because he would not compromise his beliefs. He describes how his study of true Islam has helped him accept the changes in his life and has brought him to a greater awareness of life's true purpose. As a United Nations "Messenger of Peace," he has traveled widely, and he describes his 2002 mission to Afghanistan to heighten public awareness of that country's desperate situation, as well as his more recent meeting with the Dalai Lama.