This new introduction replaces Marenbon's best-selling editions Early Medieval Philosophy (1983) and Later Medieval Philosophy (1987) to present a single authoritative and comprehensive study of the period. It gives a lucid and engaging account of the history of philosophy in the Middle Ages, discussing the main writers and ideas, the social and intellectual contexts, and the important concepts used in medieval philosophy. Medieval Philosophy gives a chronological account which treats all four main traditions of philosophy that stem from the Greek heritage of late antiquity: Greek Christian philosophy, Latin philosophy, Arabic philosophy and Jewish philosophy; provides a series of 'study' sections for close attention to arguments and shorter 'interludes' that point to the wider questions of the intellectual context; combines philosophical analysis with historical background; includes a helpful detailed guide to further reading and an extensive bibliography.