In a pair of recent articles, Brian Leftow and Eleonore Stump offer independent, although similar, accounts of the metaphysics of the Incarnation. Both believe that their Aquinas-inspired theories can offer solutions to the kind of Leibniz’s Law problems that can seem to threaten the logical possibility of this traditional Christian doctrine. In this paper, I’ll have a look at their compositional account of the nature of God incarnate. In the end, I believe their position can be seen to have unacceptable (...) philosophical and theological implications, and that is it inadequate to solve the Leibniz’s law problems that motivate it in the first place. (shrink)

As I read the texts of Aquinas and the state of the discussion among his interpreters on the question of the compatibility between creaturely freedom and divine providence, an alternative interpretation suggests itself. My impression is that traditional interpreters left Aquinas’ account of the relationships among human freedom, providence and divine goodness inadequately defended, while Maritain and Lonergan with fair intention subverted it, because their readings were hampered by libertarian intuitions about human freedom which Aquinas did not share. -/- Understanding (...) Aquinas’ account of freedom in compatibilist terms reveals greater coherence in his account of the nature of human freedom and the role our freedom plays in the created order than do accounts infected with libertarian notions of freedom. Once the compatibilist conception of freedom is comprehended, it functions like a lens of superior clarity through which other aspects of Aquinas’ thought concerning the created order can be seen afresh. Accordingly, our first task is to craft the lens itself: a compatibilist conception of freedom will be ground from the material available in Aquinas’ writing on the will, its acts, and their causes in a way unclouded by the apparent tensions between causality and freedom which libertarian intuitions introduce. Then grasping the compatibilist lens, we will see through it a coherent account of the high purpose in the plan of providence for free creatures. Finally, we will observe coherence in Aquinas’ account of the permission of sin and even the ultimate failure of free creatures through the perspective afforded by compatibilist freedom. (shrink)

[Encyclopedia entry] Born in Italy in 1225, and despite a relatively short career that ended around 50 years later in 1274, Thomas Aquinas went on to become one of the most influential medieval thinkers on political and legal questions. Aquinas was educated at both Cologne and Paris, later taking up (after some controversy) a chair as regent master in theology at the University of Paris, where he taught during two separate periods (1256-1259, 1269-1272). In the intermediate period he helped (...) establish a studium for his Order in Rome, beginning work on the Summa Theologiae, the masterwork for which he is still well-known. Subsequent to an experience (traditionally, a vision) Aquinas had on the feast of St. Nicholas in 1273, Aquinas intentionally refrained from further work on that text, so that it remained incomplete at the time of his death a year later in 1274. Apart from his own contributions, the Thomistic school – including followers within and without the Dominican Order to which Aquinas belonged – has had profound and far-reaching influence upon the history of legal thought in the West. Many of the classical developments of Thomistic thought are written as commentaries on the Summa Theologiae (hereafter, ST), including the works of Tomasso de Vio (Cajetan) and those of Domingo Banez, Francisco de Vitoria, Bartholome de las Casas, and the other highly influential members of the School of Salamanca who are noteworthy for developing Aquinas’ political and legal thought in the 16th century. Specifically, the ways in which Aquinas synthesized classical political and legal themes around the law, morality, and the common good provided a touchstone for what has come to be called ‘natural law jurisprudence.’ Natural law thinkers, in short, appeal to objective facts about what is good for human beings, and the social or political nature of the kind of creatures that we are, as a standard against which we measure the legal and social institutions created by human institutions. What is crucial here is that facts about human beings as social animals constitute reasons for individuals and groups to act or be structured in certain ways, such that ‘nature’ is the proper source for jurisprudential and political principles. (shrink)

This article develops an argument in defense of the claim that Aquinas holds that there are some kinds of activities which can be performed only by persons. In particular, it is argued that Aquinas holds that only persons can engage in the activities proper to a rational nature, e.g., the activities of intellect and will. Next, the article turns to discuss two implications of this thesis concerning Aquinas’s concept of a person. First, the thesis can be used to resolve a (...) prominent scholarly debate concerning Aquinas’s views on the possibility of human persons surviving their bodily deaths. Second, it also points to a problem with a leading interpretation of Aquinas’ account of the Christian doctrine of the Incarnation. Finally, the article concludes by discussing how a correct interpretation of Aquinas’s views on these matters is related to a broader scholarly debate concerning the history of the Western concept of a person. (shrink)

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 8.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 9.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 51.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 52.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 11.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 35.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 53.

English translation of Thomas Aquinas' Commentary on the Psalms, Psalm 54.

In contemporary positive law there are legal institutions, such as conscientious objection in the context of military service or “conscience clauses” in medical law, which for the sake of respect for judgments of conscience aim at restricting legal obligations. Such restrictions are postulated to protect human freedom in general. On the basis of Thomas Aquinas’ philosophy, it shall be argued that human dignity, understood as the existential perfection of a human being based on special unity, provides a foundation for (...) imposing limitations on the scope of legal obligations in general. Human freedom plays a crucial role in understanding dignity as perfection based on the special individuality of a personal being, which in turn is based on the free choice to pursue a unique way of life. Therefore, Aquinas’ argumentation is, at its core, liberal – the perfection rather than the imperfection of a human being underlies the requirement to limit legal obligations. Dignity understood as the special unity of a person also provides the basis for limiting obligations in the case of conscientious objection; however, in that case, such limitations aim at safeguarding internal integrity rather than the individualisation of a given way of life. _This project was financed with funds from the National Science Centre allocated on the basis of the decision number DEC-2013/09/B/HS5/04232._. (shrink)

This article examines the thoughts and works of Catholic philosopher Jacques Maritain and evangelical philosopher Norman Geisler in light of their understanding of Thomas Aquinas’s view of faith and reason.

Joseph Hannon has expressed a most surprising objection to Aquinas scholar Prof William E. Carroll in his latest paper “Theological Objections to a Metaphysicalist Interpretation of Creation.” The main claim is that Prof. Carroll misunderstands Aquinas' doctrine of creatio ex nihilo by reducing it to a metaphysical notion, rather than considering it in its full theological sense. In this paper I show Hannon's misinterpretation of Carroll's and Thomas Aquinas' thought, particularly by stressing the dependence that the doctrine of providence (...) through secondary causes has on the doctrine of creatio ex nihilo. (shrink)

Recently, the Intelligent Design (ID) movement has challenged the claim of many in the scientific establishment that nature gives no empirical signs of having been deliberately designed. In particular, ID arguments in biology dispute the notion that neo-Darwinian evolution is the only viable scientific explanation of the origin of biological novelty, arguing that there are telltale signs of the activity of intelligence which can be recognized and studied empirically. In recent years, a number of Catholic philosophers, theologians, and scientists have (...) expressed opposition to ID. Some of these critics claim that there is a conflict between the philosophy of St. Thomas Aquinas and that of the ID movement, and even an affinity between Aquinas’s ideas and theistic Darwinism. We consider six such criticisms and find each wanting. (shrink)

This paper seeks to articulate the relationship between medieval logic and theology. Reviewing modern scholarship, we find that the purpose of medieval logic, when it is even inquired about, has proven difficult to articulate without reference to theology. This prompts reflection on the metaphors of logic as a “tool” and a “game”: a tool is not merely instrumental, insofar as it can have its own intrinsic goods and can shape and be shaped by that which it serves; likewise a game, (...) with its own intrinsic goods, may yet contribute to extrinsic goods as well. After reviewing some distinctive ways in which theology shaped developments of medieval logic, this paper summarizes key examples from the work of Thomas Aquinas where medieval logic shaped the articulation of, and is therefore crucial to a proper understanding of, theological arguments and claims. The conclusion suggests implications for future philosophical and theological work. (shrink)

Most philosophers in the High Middle Ages agreed that what we immediately perceive are external objects. Yet most philosophers in the High Middle Ages also held, following Aristotle, that perception is a process wherein the perceiver takes on the form or likeness of the external object. This form or likeness — called a species — is a representation by means of which we immediately perceive the external object. Thomas Aquinas defended this thesis in one form, and Durand of St.-Pourçain, (...) his Dominican successor, rejects it. This paper explores Durand's novel criticism of Aquinas's species-theory of cognition. I first develop and defend a new interpretation of Durand's central criticism of Aquinas's theory of cognition. I close with some considerations about Durand's alternative to the theory. -/- . (shrink)

Thomas Aquinas and Mulla Sadra both criticized the previous theories on the soul-body problem, which held that the body is a mere instrument in the employ of the soul. Instead, they, following Aristotle, regard the connection between the soul and the body as form and matter since, they thought of it as an essential connection not accidental. Despite this initial similarity there are differences between Aquinas and Sadra on this problem which in the end lead them to two distinctive (...) results. (shrink)

An overview of debates in ethical theory within Christian Scholasticism in the decades after Thomas Aquinas.

There are two general routes that Augustine suggests in De Trinitate, XV, 14-16, 23-25, for a psychological account of the Father's intellectual generation of the Word. Thomas Aquinas and Henry of Ghent, in their own ways, follow the first route; John Duns Scotus follows the second. Aquinas, Henry, and Scotus's psychological accounts entail different theological opinions. For example, Aquinas (but neither Henry nor Scotus) thinks that the Father needs the Word to know the divine essence. If we compare the (...) theological views entailed by their psychologies we find a trajectory from Aquinas, through Henry, and ending with Scotus. This theological trajectory falsifies a judgment that every Augustinian psychology of the divine persons amounts to a pre-Nicene functional Trinitarianism. This study makes clear how one's awareness of the theological views entailed by these psychologies enables one to assess more thoroughly psychological accounts of the identity and distinction of the divine persons. (shrink)

Identity-Over-Time has been a favorite subject in the literature concerning Thomas Aquinas. Aquinas addresses this issue in many discussions, including especially the identity of material things and artifacts, the identity of the human soul after the corruption of body, the identity of the body of Christ in the three days from his death to his resurrection and the identity of the resurrected human body at the end of time. All these discussions have a point in common: they lead Aquinas (...) to raise the question of Identity-Over-Time with respect to things that fully exist in act, i.e., things that possess an identity of their own and change some of their parts or properties over time while continuing to be what they are. In this article, I investigate this topic from a different angle, considering the case of the trans-temporal identity of things that do not yet have an identity of their own or fully exist in act. The case at stake is that of the identity of the human embryo through the process of human generation. It is a puzzle that Aquinas seems to have some difficulties to solving, given his account of human embryogenesis as a process that alternates generations and corruptions of the subject. At the same time, though, Aquinas does not want to renounce the idea that the subject of generation must be numerically one and the same throughout all the process. In order to solve this puzzle, Aquinas seems to suggest distinguishing the identity of the subject from the identity of its matter and/or form. At given conditions, a thing can even change its matter and form while continuing to be the same thing in number. Specifically, the numerical identity of the subject of generation is justified by the identity entailed by the metaphysical notions of potency and act. (shrink)

Although the question of whether, in the thought of Thomas Aquinas, sanctifying grace is “created” or “uncreated” has received considerable attention in the last several decades, many of the questions and arguments proposed by those, such as Karl Rahner, Jerome Ebacher, and A.N. Williams, in favor of grace being uncreated have gone unanswered. Among these ancillary questions and arguments are those concerning the proper subject of grace, the categorial classification of grace, and the reason for the mystery and unconsciousness (...) of grace. These questions appear unrelated, but, as this paper argues, they are each logically connected to each other and to the overall thesis that sanctifying grace is created, not uncreated. This paper aims to make Aquinas’s thesis that grace is created more palatable to objectors by addressing each of these previously unaddressed ancillary questions. (shrink)

Building on the system of reason provided for by the Greek philosopher and specifically Aristotle, St. Thomas Aquinas built a comprehensive system and theory of natural law which has lasted through the ages. The theory was further developed in the Middle Ages and in the Enlightenment Ages by many a prominent philosopher and economist and has been recognized in the Modern Age. The natural law-theory and system has been repeatedly applied to the spheres of economic thought and has produced (...) many lasting contributions such as private property rights and individual rights. In recent times with the collapses of the financial system and rapid globalization, there has been a renewed interest in the application of natural law theory to economics to counter a certain anthropology and distortion of values created by a modern economic system of selfpreservation deriving its insights from the philosophies of Thomas Hobbes and Niccolo Machiavelli. (shrink)

This is an excerpt of Aquinas' proof of the existence of God. In proving God's existence, Aquinas lays out a cosmological argument of which also sets that tone for his seminal work in epistemology.

Arguably one of the most fundamental phase shifts that occurred in the intellectual history of Western culture involved the ontological reduction of secondary qualities to primary qualities. To say the least, this reduction worked to undermine the foundations undergirding Aristotelian thought in support of a scientific view of the world based strictly on an examination of the real—primary— qualities of things. In this essay, I identify the so-called “Causal Argument” for a reductive view of secondary qualities and seek to deflect (...) this challenge by deriving some plausible consequences that support a non-reductive view of secondary qualities from an Aristotelian view (via the philosophical commentary of Thomas Aquinas). Specifically, my argument has two facets. First, I show that Aristotle’s view both implies recognition of the extramental existence of secondary qualities and is a prima facia natural view to take regarding the ontology of secondary qualities. Second, I show that the Causal Argument, which is thought to undermine a natural view of secondary qualities as real things, loses its bite when one examines perception in light the ontological relationship among the categories of quality, quantity and substance. (shrink)

Several of Thomas Aquinas's proofs for the existence of God rely on the claim that causal series cannot proceed in infinitum. I argue that Aquinas has good reason to hold this claim given his conception of causation. Because he holds that effects are ontologically dependent on their causes, he holds that the relevant causal series are wholly derivative: the later members of such series serve as causes only insofar as they have been caused by and are effects of the (...) earlier members. Because the intermediate causes in such series possess causal powers only by deriving them from all the preceding causes, they need a first and non-derivative cause to serve as the source of their causal powers. (shrink)

Thomistic commentators agree that Thomas Aquinas at least nominally allows for 'to be' (esse) to signify not only an act contrasted with essence in creatures, but also the essence itself of those creatures. Nevertheless, it is almost unheard of for any author to interpret Thomas's use of the word 'esse' as referring to essence. Against this tendency, this paper argues that Thomas's In V Metaphysics argument that every predication signifies esse provides an important instance of Thomas (...) using esse to signify essence. This reading of In V Metaphysics, which this paper defends against an alternative interpretation, entails significant reinterpretations of Thomas's technical terms 'esse substantiale' and 'esse in rerum natura' as well as Thomas's use of 'is,' both as a copula and as a principal predicate. (shrink)

The coherence objection to the doctrine of the Incarnation maintains that it is impossible for one individual to have both the attributes of God and the attributes of a human being. This article examines Thomas Aquinas’s answer to this objection. I challenge the dominant, mereological interpretation of Aquinas’s position and, in light of this challenge, develop and defend a new alternative interpretation of Aquinas’s response to this important objection to Christian doctrine.

It is universally acknowledged that, for St. Thomas, there is a distinction between human persons or supposits and their natures or essences. But it is usually thought that there is no parallel distinction between the angelic person or supposit and its nature. Yet, as this paper argues, Aquinas consistently puts forward just such a distinction. This paper surveys Aquinas’s arguments for the unique identity of God with his essence and the corresponding distinctions between created persons and their essences, showing (...) in the process how the distinction found in angels differs from that found in material substances. It is important to recognize the distinction between supposit and nature in angels not only for its own sake as it touches on his understanding of created persons—human or angelic—but also insofar as it sheds light on Aquinas’s understanding of divine simplicity and of other act-potency compositions in creatures. (shrink)

One important task of metaphysics is to answer the question of what it is for an object to exist. The first part of this book offers a systematic reconstruction and critique of contemporary views on existence. The upshot of this part is that the contemporary debate has reached an impasse because none of the considered views is able to formulate a satisfactory answer to this fundamental metaphysical question. The second part reconstructs Thomas Aquinas’s view on existence (esse) and argues (...) that it contributes a new perspective which allows us to see why the contemporary debate has reached this impasse. It has come to this point because it has taken a premise for granted which Aquinas’s view rejects, namely, that the existence of an object consists in something’s having a property. A decisive contribution of Aquinas’s theory of esse is that it makes use of the ideas of metaphysical participation and composition. In this way, it can be explained how an object can have esse without being the case that esse is a property of it. This book brings together a reconstruction from the history of philosophy with a systematic study on existence and is therefore relevant for scholars interested in contemporary or medieval theories of existence. (shrink)

Describes a Neoplatonic hierarchy of the cardinal virtues extending to immaterial beings, and compares its appropriation by Bonaventure and Aquinas.

Can the persistence of a human being's soul at death and prior to the bodily resurrection be sufficient to guarantee that the resurrected human being is numerically identical to the human being who died? According to Thomas Aquinas, it can. Yet, given that Aquinas holds that the human being is identical to the composite of soul and body and ceases to exist at death, it's difficult to see how he can maintain this view. In this paper, I address Aquinas's (...) response to this objection . After making a crucial clarification concerning the nature of the non-repeatability principle on which the objection relies, I argue that the contemporary notion of immanent causal relations provides us with a way of understanding Aquinas's defence that renders it both highly interesting and philosophically plausible. (shrink)

From the perspective of Aquinas’ Biblical commentaries, the article develops the reflection on pignus / arra haereditatis (Eph 1:5) seeing these essential elements of Thomas’ reflection on salvation in the terminological question of which one is better: pignus or arra, namely the pledge or the earnest/deposit. Thomas develops soteriology, which indicates that human salvation starts “now” and not “later,” through the participation in the Passion of Christ and in His merits. Analyzing Aquinas’ commentary on Ps 21, on the (...) Letter to the Ephesians and on the Letter to the Galatians together with the themes of Christ’s obedience and its soteriological significance as well as His wish of voluntary death for us, the article shows the Biblical roots of Thomas’ soteriology. The author devotes particular attention to the analysis of the logic of inchoatio and consummatio in Thomas’ soteriological grammar and his understanding of faith as the beginning of eternal life and the ensuing consequences. (shrink)

The article begins with an inquiry on St. Thomas Aquinas' theological framework of God in the Summa Theologica, as seen through the lenses of Pseudo Dionysius and Proclus Lycaeus, in the Light of Plato's dialectical exploration of the One in the Parmenides. We proceed to the similarities and differences between St. Thomas Aquinas’ theology and Plato’s philosophy in terms of the means through which the soul ascends towards the highest vision. Ideas of thinkers such as Democritus, Aristotle, Iamblichus, (...) Thomas Taylor, Friedrich Nietzsche and Martin Heidegger supported or provided counter arguments regarding these matters. The essay raises a significant question pertaining to the relationship between Plato’s thought with that of St. Thomas Aquinas’. (shrink)

Servais Pinckaers, in his most important work, The Sources of Christian Ethics, asks the provocative question: is the Moral Theology of St. Thomas Aquinas Christian or, alternatively, does Aquinas rely so much on the ethics of Aristotle that his teaching is merely philosophical? This paper presents an overview of Pinckaers’s answer to this question. His answer is important in that it addresses a common misinterpretation of St. Thomas, which is to overstress his Aristotelian influence and understate his reliance (...) on Scripture, the Fathers (especially Augustine), and the New Law of the Gospel. In this way Pinckaers forms part of a ressourcement in Thomistic studies that seeks to reaffirm the evangelical character of Aquinas’s work and its importance in the renewal of Moral Theology called for at Second Vatican Council. (shrink)

This article seeks to justify the claim that Thomas Aquinas proposed a concept of natural law which is immune to the argument against the recognition of an objective grounding of the good formulated by a well-known representative of the liberal tradition, Isaiah Berlin, in his famous essay “Two Concepts of Freedom.” I argue that Aquinas’s concept of freedom takes into account the very same values and goals that Berlin set out to defend when he composed his critique of natural (...) law. In particular, the article suggests that Aquinas recognizes freedom as a greater perfection of man than rationality, and that this freedom is realized, among other things, through the co-construction of the good that gives a goal and a shape to human action and to the whole of a person’s life. I argue that the co-construction of such a good involves the co-construction of natural law in the strict sense of the term. Indeed, the content of natural law can be understood as a set of goods which are goals that inform human action. From a human perspective, natural law is not a pre-existing recipe which has merely to be “read.” Defining the concrete content of natural law is an ongoing process. The process of defining natural law’s content takes humanly knowable, objective elements into account, and so draws on knowledge. Yet free choice also plays an important part in this process. When speaking of the process of defining the content of natural law, therefore, and in determining what here-and-now is to be done, it is reasonable to describe man as a creator of the natural law, or as a legislator, just as the members of a parliament are the creators of civil law — bearing in mind that only a just law is truly law and therefore the creation of both civil and natural law reaches only as far is the scope of just actions directed by these laws. From the perspective of human action, we may speak of each person’s free choice to establish a given good as the end of a specific act, and in so doing to declare that action proper under natural law in the strict sense of the term (which differs from the rules of natural law). An appreciation of what is particular and individual (particulare et individuum), and an appreciation of free choice that goes hand-in-hand with this, is deeply embedded in Thomas’s system of thought. Particularity and individuality has its basis in an especially excellent way of human existence. (shrink)

This is the introduction to the Question 10 (The Eternity of God) of St. Thomas Aquinas' "Summa Theologiae".

This is the introduction to the Question 9 (The Immutability of God) of St. Thomas Aquinas' "Summa Theologiae".

This is the introduction to the Question 8 (The Existence of God in Things) of St. Thomas Aquinas' "Summa Theologiae".

Aquinas's account of law as an ordering of reason for the common good of a community depends on the mereology that covered his theory of parthood relations, including the relations of parts to parts and parts to wholes. Aquinas argued that 'all who are included in a community stand in relation to that community as parts to a whole', and 'every individual person is compared to the whole community as part to whole'. Aquinas held that the perfection of wholes through (...) the proper ordering of their parts does not entail the elimination of diversity, but in many cases requires diversity. Aquinas argued that there are two ways of ordering parts within a whole. Firstly, the parts are ordered with respect to one another, and secondly, the parts are ordered toward an end. The ordering of a whole's parts to one another is always for the sake of the ordering of the whole to its extrinsic end. Aquinas argued that the good toward which the law directs a community is called the 'common good' of that community. The common good or common end toward which members of a community are ordered can be the sort of end that the agents bring into existence through their own actions such as justice within a community, or the sort of end that can exist apart from the actions of the agents. (shrink)

This is the introduction to the Question 7 (The infinity of God) of St. Thomas Aquinas "Summa Theologiae".

Aquinas’s thought is often considered an exemplary balance between Christian faith and natural reason. However, it is not always sufficiently clear what such balance consists of. With respect to the relation between philosophical topics and the Christian faith, various scholars have advanced perspectives that, although supported by Aquinas’s texts, contrast one another. Some maintain that Aquinas elaborated his philosophical view without being under the influence of faith. Others believe that the Christian faith constitutes an indispensable component of Aquinas’s view; at (...) least when Aquinas focused on those statements that, though maintainable by mere reason, belong to the Christian revelation. In this essay I intend to show that the aforementioned perspectives can be reconciled on the basis of Aquinas’s concept of faith. If we do not limit ourselves to considering faith as the assent to the revealed truth, but also look at what leads the believer to assent—i.e., charity that unites the believer with God and is gratuitously conceded by God himself—then the relation between faith and reason appears to be twofold. On the one hand, the truths of faith cannot participate in the rational inquiry, because according to Aquinas faith lacks the evidence searched for by natural reason. On the other hand, since Aquinas holds that faith is the assent to the revelation due to the love for God that is granted by God himself, the believer will take faith as more certain than intellect and science, and the truths of faith will constitute the orientation and criterion of her/his rational investigation. The truths shall constitute orientation because the believer aims to confirm by reason what she/he already believes. They will also be criterion, because in case of a contradiction between rational arguments and revealed truths, reason must be considered mistaken and the rational investigation must start anew from the beginning. (shrink)