Joe was a one in a billion guy, an ideal role model and one hell of a fighter. I actually think he was born without the ability to be knocked out too. I know he was beaten up by Foreman but it was the ref that had to stop it both times not Joe. He just kept getting up and coming back for more from the biggest puncher of all time IMO. Similar thing in Ali-Frazier III too (the Thrilla) if legend is to be believed Ali wanted pulling out but Dundee realised that Futch was pulling Joe so he waited. I always wonder how differently things would have been had this happened.