These essays provide original reflections and new evidence for the lives and work of an outstanding medieval couple, Peter Abelard and Heloise. The main themes of the author's studies are the careers and the thought of Peter Abelard, his philosophy, theology and monastic teaching, his relationship in marriage and in religious life with Heloise and their correspondence. The essays, now brought together in a single volume, show how much is still to be learned from the presentation of new evidence and the opening of new enquiries about the lives and calamities of Peter Abelard and Heloise.