"Augustinianism" may be described as that complex of philosophical ideas that reflected to a greater or lesser degree the philosophy of Augustine. Many of the philosophers who came after Augustine not only restated his leading ideas but also frequently modified them with their own interpretations. Such interpretations were often the result of the impact of other schools of thought, notably the Avicennian and the Aristotelian. Occasionally doctrines that were only implicit in Augustine—for instance, the plurality of forms and universal hylomorphism—were made explicit and assumed considerable importance. Thus there originated in the medieval period what has been termed the Augustinian tradition, which in the later years of its development was closely identified with the Franciscan order. Such a tradition dominated medieval thought to the time of Thomas Aquinas. After Thomas it gradually disintegrated owing to the impact of Thomism and a resurgent Aristotelianism, and no longer...