The Philosophy of Recursive Thinking, German author Manfred Kopfer suggested a viable solution for Sisyphus' punishment. Every time Sisyphus reaches the top of the mountain, he breaks off a stone from the mountain and carries it down to the lowest point. This way, the mountain will eventually be levelled and the stone cannot roll down anymore. In Kopfers' interpretation, the solution turns the punishment by the gods into a test for Sisyphus to prove his worthiness for godlike deeds. If Sisyphus is able "to move a mountain", he shall be allowed to do what, otherwise, only gods are entitled to do. Literary interpretations Homer describes Sisyphus in both Book VI of the Iliad and Book XI of the Odyssey. Ovid, the Roman poet, makes reference to Sisyphus in the story of Orpheus and Eurydice. When Orpheus descends and confronts Hades and Persephone, he sings a song so that they will grant his wish to bring Eurydice back from the dead. After this song is sung, Ovid shows how moving it was by noting that Sisyphus, emotionally affected for just a moment, stops his eternal task and sits on his rock, the Latin wording being inque tuo sedisti, Sisyphe, saxo ("and you sat, Sisyphus, on your rock"). In Plato's Apology, Socrates looks forward to the after-life where he can meet figures such as Sisyphus, who think themselves wise, so that he can question them and find who is wise and who "thinks he is when he is not" Albert Camus, the French absurdist, wrote an essay entitled The Myth of Sisyphus, in which he elevates Sisyphus to the status of absurd hero. Franz Kafka repeatedly referred to Sisyphus as a bachelor; Kafkaesque for him were those qualities that brought out the Sisyphus-like qualities in himself. According to Frederick Karl: "The man who struggled to reach the heights only to be thrown down to the depths embodied all of Kafka's aspirations; and he remained himself, alone, solitary." The philosopher Richard Taylor uses the myth of Sisyphus as a representation of a life made meaningless because it consists of bare repetition. Wolfgang Mieder has collected cartoons that build on the image of Sisyphus, many of them editorial cartoons. In popular culture Sisyphus is the subject of the song "Sisyphus" by Andrew Bird, on the album My Finest Work Yet (2019). Sisyphus is a character in Hades, a 2020 indie rogue-like game developed by