The Kreutzer Sonata is a novella told largely as a confession. On a train journey, a man named Pozdnyshev tells a fellow passenger the story of his marriage, which he describes as marked by jealousy, mistrust and growing hostility. Music, in particular a Beethoven sonata, plays a part in the tale. Tolstoy used the story to attack ideas about love, marriage and physical desire, and the work caused controversy and was restricted by censors in Russia. It is a harsh, intense piece that shows his later moral views at their most uncompromising.