Aquinas On Simplicity

Peter Weigel offers an in-depth examination of what divine simplicity means for Aquinas and how he argues for its claims. Simplicity and other divine predicates are analysed within the larger metaphysical and semantic framework surrounding Aquinas' philosophy of God.

This updated edition by one of the world's leading apologists presents a systematic, positive case for Christianity that reflects the latest work in the contemporary hard sciences and humanities. Brilliant and accessible.

Hughes discusses Aquinus' work regarding the apparently irreconcilable theses of natural and revealed theology, and he argues that Aquinas fails in his attempt to reconcile absolute simplicity with the doctrines of the Trinity and the Incarnation. Hughes also offers a provocative account of divine simplicity and explores its implications for the Thomistic doctrines of the Trinity and Incarnation.

The doctrine of divine simplicity has long played a crucial role in Western Christianity's understanding of God. It claimed that by denying that God is composed of parts Christians are able to account for his absolute self-sufficiency and his ultimate sufficiency as the absolute Creator of the world. If God were a composite being then something other than the Godhead itself would be required to explain or account for God. If this were the case then God would not be most absolute and would not be able to adequately know or account for himself without reference to something other than himself. This book develops these arguments by examining the implications of divine simplicity for God's existence, attributes, knowledge, and will. Along the way there is extensive interaction with older writers, such as Thomas Aquinas and the Reformed scholastics, as well as more recent philosophers and theologians. An attempt is made to answer some of the currently popular criticisms of divine simplicity and to reassert the vital importance of continuing to confess that God is without parts, even in the modern philosophical-theological milieu.

Thomas Aquinas (1224/6-1274) lived an active, demanding academic and ecclesiastical life that ended while he was still comparatively young. He nonetheless produced many works, varying in length from a few pages to a few volumes. The present book is an introduction to this influential author and a guide to his thought on almost all the major topics on which he wrote. The book begins with an account of Aquinas's life and works. The next section contains a series of essays that set Aquinas in his intellectual context. They focus on the philosophical sources that are likely to have influenced his thinking, the most prominent of which were certain Greek philosophers (chiefly Aristotle), Latin Christian writers (such as Augustine), and Jewish and Islamic authors (such as Maimonides and Avicenna). The subsequent sections of the book address topics that Aquinas himself discussed. These include metaphysics, the existence and nature of God, ethics and action theory, epistemology, philosophy of mind and human nature, the nature of language, and an array of theological topics, including Trinity, Incarnation, sacraments, resurrection, and the problem of evil, among others. These sections include more than thirty contributions on topics central to Aquinas's own worldview. The final sections of the volume address the development of Aquinas's thought and its historical influence. Any attempt to present the views of a philosopher in an earlier historical period that is meant to foster reflection on that thinker's views needs to be both historically faithful and also philosophically engaged. The present book combines both exposition and evaluation insofar as its contributors have space to engage in both. This Handbook is therefore meant to be useful to someone wanting to learn about Aquinas's philosophy and theology while also looking for help in philosophical interaction with it.

All perfections of things pre-exist in the divine essence, yet it is entirely simple, without components. These seemingly opposed attributes of God are reconciled in Questions 3–6 of the First Part of the Summa theologiae, here newly translated and explained in line-by-line detail. Among topics receiving special attention are Aquinas’s doctrine of participation, his conception of God as a subsisting act of being, and the distinction and order of transcendentals such as being, goodness, and beauty. Intended for advanced undergraduates, graduate students, and teachers, Aquinas on God’s Simplicity and Perfection throws light on the order of Aquinas’s questions, addresses difficulties commonly encountered by modern readers, and includes an exhaustive glossary of all technical terms occurring in the Summa’s first six Questions.

Unknown to many, increasing numbers of conservative evangelicals are denying basic tenets of classical Christian teaching about God, with departures occurring even among those of the Calvinistic persuasion. James E. Dolezal’s All That Is in God provides an exposition of the historic Christian position while engaging with these contemporary deviations. His convincing critique of the newer position he styles “theistic mutualism” is philosophically robust, systematically nuanced, and biblically based. It demonstrates the need to maintain the traditional viewpoint, particularly on divine simplicity, and spotlights the unfortunate implications for other important Christian doctrines—such as divine eternality and the Trinity—if it were to be abandoned. Arguing carefully and cogently that “all that is in God is God Himself,” the work is sure to stimulate debate on the issue in years to come.

Steven J. Duby examines the doctrine of divine simplicity. This discussion is centered around the three distinguishing features: grounding in biblical exegesis, use of Thomas Aquinas and the Reformed Orthodox; and the writings of modern systematic and philosophical theologians. Duby outlines the general history of the Christian doctrine of divine simplicity and discusses the methodological traits and essential contents of the dogmatic account. He substantiates the claims of the doctrine of divine simplicity by demonstrating that they are implied and required by the scriptural account of God. Duby considers how simplicity is inferred from God's singularity and aseity, as well as how it is inferred from God's immutability and infinity, and the Christian doctrine of creation. The discussion ends with the response to major objections to simplicity, namely that the doctrine does not pay heed to the plurality of the divine attributes, that it eradicates God's freedom in creating the world and acting toward us; and that it does not cohere with the personal distinctions to be made in the doctrine of the Trinity.