Fazlallah Astarabadi was a 14th-century Islamic religious leader who believed that the world was about to come to an end. He claimed that he had received direct revelations from God in his dreams and that this made him equal in stature to the prophets Moses, Jesus, and Muhammad. His followers were called Hurufis (Letterists) because of their belief that the sounds and letters that made up human languages contained all spiritual truths. They considered Fazlallah a manifestation of God in a human body, and even after his execution in 1394 expected that he would return and create a just society before the world was destroyed in an apocalypse. This study of Fazlallah Astarabadi's life and thought also provides a history of his movement and an analysis of his legacy for later Muslims. Complete with a guide to further reading, this engaging guide to an important figure will prove an indispensable resource for readers of all backgrounds.