Abstract

A reassessment of Aquinas’s doctrine of divine infinity, particularly in the light of the previous history of the concept within Western philosophy and theology. From the critical perspective provided by this history the central place which has been claimed for it in Aquinas’s thinking is questioned, as are also its originality and coherence. The notion that the doctrine of divine infinity was introduced to Western thought by Judaeo‐Christianity is rejected; from Anaximander onwards it had been a central concept in Greek philosophy. Aristotle however had rejected it so effectively that, for several centuries afterwards, it seems to have led an ‘underground’ existence until it finally surfaces again in ‘Gnostic’ and related currents of thought. It is from these circles that it finally, and after some resistance, patchily entered orthodox Christian thinking. Likewise Plotinus was not the source of the doctrine, as some have claimed; historical precedence must be given to the Gnostics. Neoplatonism never, despite the prestige of Plotinus, fully accepted the doctrine; in Proclus it is a subordinate emanation from the One, which is beyond Infinity and Infinitude. Nor, because of the influence of Aristotle, does Islamic Neoplatonized Aristotelianism endorse the doctrine. Aquinas’s commitment to it seems to stem from the impact of John of Damascus’s stress upon the doctrine, the translation of whose work greatly influenced Western theology from the late twelfth century onward, together with his need to distance himself from the restrictions of the divine power and freedom found in the Arabic Aristotelian philosophers, whom, in general, he regarded as philosophical authorities. But his position on the doctrine is flawed by equivocation and self‐contradiction, flowing from his attempt to reconcile Christian personalist theism with Neoplatonized Aristotleain necessitarian monism.