RMS can sound like a stubborn, arrogant, pigheaded zealot (possibly because that's part of his makeup ;). But his arrogant, stubborn, pigheaded stick-to-it-ness changed the world. For the better. Not many of us can claim that. I've never met him, but if I do, I will thank him for his life's work and beg forgiveness for being one of those annoying anonymous people analyzing his personality on the internet.