Almost nobody knew his name. Nobody outside his immediate neighborhood had read his words or heard him speak. Nobody knows what happened to him even one hour after his moment in the world's living rooms. But the man who stood before a column of tanks near Tiananmen Square — June 5, 1989 — may have impressed his image on the global memory more vividly, more intimately than even Sun Yat-sen did. Almost certainly he was seen in his moment of self-transcendence by more people than ever laid eyes on Winston Churchill, Albert Einstein and James Joyce combined.