Medieval Heresy Popular Movements From The Gregorian Reform To The Reformation 3e

This book is a working synthesis of the state of research on popular heretical movements in Western Europe from the eighth to the fifteenth centuries, intended both for the undergraduate reader who needs a one-volume introduction and for the scholar working in one portion of this vast field who wants a handbook for quick reference on the subject as a whole. "Popular" has been taken to mean movements with a substantial following amongst laymen. - Preface.