Abstract

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Housing the Powers: Medieval Debates about Dependence on God by Marilyn McCord AdamsZita V. TothMarilyn McCord Adams. Housing the Powers: Medieval Debates about Dependence on God. Oxford: Oxford University Press, 2022. Pp. 240. Hardback, $80.00.Housing the Powers is a collection of eight interrelated articles by the late Marilyn McCord Adams (the fourth one coauthored with Cecilia Trifogli), pieced together as chapters of a book by Robert Merrihew Adams, who also provides an introduction to the volume and a bibliography. The chapters are detailed and rigorous, and provide new perspectives on some old issues in medieval Aristotelian philosophy. The book is a must-read for anyone interested in medieval theories of causal powers and their surrounding clusters of problems, whether in the context of metaphysics, epistemology, the philosophy of mind, or even ethics.The book receives its title from some persistent conundrums in the medieval discussion concerning how to find suitable subjects for some Aristotelian causal powers, what these subjects must be like, how they and their power(s) are related, and some connected issues on the side of these powers’ objects. The subtitle indicates that the book also pays attention to the theological considerations that often played a significant role in the medieval treatments of these puzzles.Housing the Powers divides roughly into four parts. The first two chapters give a general introduction to the basic hylomorphic framework, discussing issues such as why to posit causal powers in the first place and how to account for the appearance of self-actuation (a causal power’s ability to reduce itself from potency to act) in some but not all instances of observed causal interaction. The next two chapters apply this general theory of causal powers to the human soul, discussing how the soul is related to its powers while dealing with various theological issues, mostly in connection with the Christian doctrine of the Trinity. Specifically, these two chapters analyze various solutions to a central conundrum: although the intellect is purely inorganic and immaterial, and the sensory part of the soul is necessarily tied to bodily organs, nevertheless they constitute some kind of a unity, since we commonly think that the subject of intellection and the subject of sensation are the same. Chapters 5 and 6 turn to the problem of knowledge and divine illumination, presenting various solutions to another puzzle: while for certainty and knowledge proper we need stability of objects and subjects, in our current life we seem to have neither. Finally, chapters 7 and 8 discuss some issues related to habits and virtues—especially regarding the role they play in relation to powers—and the problems arising from the theological thesis that some of these virtues are supernaturally infused. [End Page 662]The greatest strength of the book is Adams’s almost ruthless way of getting to the bottom of things: she sees where certain seemingly innocuous claims eventually lead and chases disagreements to their ultimate source—which can be a rather difficult task in the case of the authors under consideration, who share a basic theological outlook as well as a broadly speaking Aristotelian background. This ruthlessness makes the discussion of these otherwise relatively well-known issues unique and fascinating. Thus, in chapter 2, we can see how the seemingly niche question of self-actuation led to broader disagreements between Henry of Ghent, Godfrey of Fontaines, and Duns Scotus on the matter of free will and the basic nature of causal powers. Similarly, in chapter 3, we see how the question of the essential relationality of powers led to remarkably different views concerning the number of distinct powers or even the number of distinct substantial forms.Disagreements between the discussed authors come in many forms and from many sources. Thus, already in the first chapter, we glimpse a disagreement between Aquinas and Scotus on the adequate object of powers, which ultimately points to their deeper disagreement regarding how to define powers in the first place. Similarly, chapter 6 leads us to an exhilarating search for the roots of the disagreement regarding the question of divine illumination: while it is well known that Henry of Ghent thinks that some divine illumination is necessary...