Allegory and Philosophy in Avicenna (Ibn Sînâ): With a Translation of the Book of the Prophet Muhammad's Ascent to HeavenIslamic allegory is the product of a cohesive literary tradition to which few contributed as significantly as Ibn Sina (Avicenna), the eleventh century Muslim philosopher. Peter Heath here offers a detailed examination of Avicenna's contribution, paying special attention to Avicenna's psychology and poetics and to the ways in which they influenced strains of theological, mystical, and literary thought in subsequent Islamic and Western intellectual and