Book excerpt: This renowned study provides a `map' of the influence of the powerful, original theology of Joachim of Fiore (c.1132-1202). Radically revised since its first publication in 1987, and augmented with further prophetic voices and symbols from the past, it confirms the deep structures of visions of the future while demonstrating and questioning the persistence of Joachimist themes in the twentieth-century fin de siecle.