Within the last decade noteworthy efforts have been made to provide for a better understanding of Joachim of Fiore through new editions of his work and the establishment of a more exact chronology for the events in his life. Under the direction of Kurt-Victor Selge a Herausgeberkommission der kritischen Gesamtausgabe der Werke Joachims von Fiore has been established, a symposium on the manuscript traditions of Joachim’s work has been held under its auspices, and new critical editions are expected to be forthcoming soon. Professor Selge has contributed significantly to these efforts with his study of the chronology of Joachim’s writings and his edition of the Praephatio sive Prologus super Apocalypsim. I am building on this work and, of course, the outstanding work of such scholars as Marjorie Reeves, and hope now to identify a distinctive stage in Joachim of Fiore’s career.