Abstract

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Free Will and the Rebel Angels in Medieval Philosophy by Tobias HoffmannNicholas OgleFree Will and the Rebel Angels in Medieval Philosophy by Tobias Hoffmann (Cambridge: Cambridge University Press, 2021), xiv + 292 pp.Modern readers are often perplexed by the frequency and rigor with which angels are discussed in medieval philosophical texts. To the untrained eye, it may seem as if debates concerning the various properties and abilities of purely spiritual beings are the epitome of Scholastic extravagance, which can be safely disregarded—if not outright ridiculed—as a fanciful diversion from more essential philosophical concerns. The truth, of course, is that angelological reflection gave rise to some of the most original philosophical ideas of the Middle Ages, from Anselm's two affectiones of the will to Aquinas's "real distinction" between essence and existence. Far from being an idiosyncratic theological addendum to an already complete philosophical system, consideration of the angelic nature was in fact a central component of medieval philosophy, without which certain crucial metaphysical and psychological insights might not have occurred. This often-neglected truth is given detailed expression in Tobias Hoffmann's Free Will and the Rebel Angels in Medieval Philosophy, which explores how philosophical investigation into the fall of the angels—that is, the hypothesis of an evil choice made by rational beings under optimal psychological conditions—helped bring about significant advances in medieval debates about free will. Focusing on the century immediately following the reception of Aristotle's action theory in the Latin West (from roughly the 1220s to the 1320s), Hoffmann examines how theological claims regarding angelic sin influenced medieval thinkers as they sought to reconcile the intellectualism of Aristotelian moral psychology with their understanding of free will as the power to choose between alternatives.This period is particularly deserving of study, Hoffmann argues, because it was then that the existence of free will first began to be "investigated within a philosophical account of action," rather than merely asserted on theological grounds as a necessary corollary of the doctrines of grace and sin (1). Consequently, theological anthropology took what Hoffmann calls a "psychological turn," with theologians newly determined to explain rational agency in terms of the interaction between different powers of the soul. In Hoffmann's estimation, the subsequent debates over the respective roles of intellect and will in the process of decision-making, as well as the relation between faulty cognition and voluntary wrongdoing, gave rise to some of the most innovative theories of free will in the later Middle Ages—including not only those of celebrated thinkers such as Thomas Aquinas and John Duns Scotus, but also those of lesser-known luminaries such as [End Page 388] John of Pouilly and Peter Auriol. Although the concerns that motivated these debates were primarily anthropological, having to do with specifically human psychological processes, Hoffmann's study foregrounds the role that the angels played in the unfolding of various controversies. Comparing medieval angelological discussion to the thought experiments commonly employed by contemporary philosophers, Hoffmann argues that angels proved significant because they provided a subject matter in which rational freedom could be considered in a pure and ideal form, abstracted from any material constraints (3). While the angelic nature was certainly regarded as worthy of study in its own right, it was also often viewed as an opportunity to explore the nature of cognition and volition simpliciter, in relation to which the distinctiveness of human psychology could be better understood.The book is divided into three parts, each of which traces the historical development of a distinct topic related to the free will debate. In the first part, Hoffmann presents a lucid account of the various ways that medieval thinkers employed Aristotelian ideas—including not only the essentials of his action theory, but also metaphysical doctrines such as the distinction between active and passive powers—as they sought to explain the psychological origins of free will. Comprising over half the text, these chapters provide a comprehensive overview of the free will debate from its origins in the writings of Anselm of Canterbury to its culmination in the proto-modern theorizing of William of Ockham, including a thorough discussion of the controversies...