He was the embodiment of pure intellect, the bumbling professor with the German accent, a comic cliche in a thousand films. Instantly recognizable, like Charlie Chaplin's Little Tramp, Albert Einstein's shaggy-haired visage was as familiar to ordinary people as to the matrons who fluttered about him in salons from Berlin to Hollywood. Yet he was unfathomably profound — the genius among geniuses who discovered, merely by thinking about it, that the universe was not as it seemed.