In his 1952 book, "Lucifer and Prometheus", Zvi Werblowsky presented the speculatively derived Jungian construction of the character of Satan in Milton's celebrated poem "Paradise Lost". Werblowsky applied his own Jungian style of interpretation to appropriate parts of the Prometheus myth for the purpose of interpreting Milton. A reprint of his book in the 1990s by Routledge Press included an introduction to the book by Carl Jung. Some Gnostics have been associated with identifying the theft of fire from heaven as embodied by the fall of Lucifer "the Light Bearer".