Narcissus, or The Lover of Himself is a play of staggering mediocrity. Jean-Jacques Rousseau, better known as a social thinker than as a playwright, claims to have written it as a young man of eighteen, some twenty years before it was performed for King Louis XV on December 18, 1752. It flopped and never saw the stage again in Rousseau's lifetime. In his preface to the play, penned after its failed production, Rousseau avows that he kept himself from publishing it for as long as he held onto some regard for his reputation as an author. This is a fairly measured judgment, for a work the...