Well into his forties he kept swinging between the poles of his double life as only a true Manichean can, a rock star buried in a pile of cocaine one minute and a sadhu renunciant fingering his beads the next. But by his fifties he had abandoned the pretensions of stardom altogether. He had married a formidable but endlessly forgiving woman. (“People sometimes say to me, ‘What’s the secret of a long marriage?’ ” Olivia says in the movie. “And I’m like, ‘You don’t get divorced!’ ”)