Jonathan Miller is retiring from the world of opera. Again. Maybe. But regardless of his career status, he’s still one of the more fascinating interviews in the business. “Amid bomblets tossed at traditional opera audiences, the Metropolitan Opera, religious Jews (he is Jewish), American political culture, Belgian colonialists and German conceptualist directors, Mr. Miller weaves a narrative of his directing method: a focus on the ‘negligible detail’ and ‘subintentional actions.'”