Even though he's a few pounds heavier, the face staring out of the head-guard is still unmistakably that of Muhammad Ali. "Everybody knows me," Ali says. "Not just in the West, but in China, in Russia, in Morocco, in Libya. They know me all over the world. I set up a goal for myself, to demonstrate to other people what can be done. I do it for them. People tell me not to fight, but they are at the foot of the wall of knowledge and I am at the top. My horizon is greater than theirs. Why do people go to the moon? Why did Martin Luther King say he had a dream? People need challenges."