1. Aim of the Thesis. This thesis is concerned to investigate the schemata of metaphysical concepts, and the lines of philosophical argument, used by Thomas Aquinas in reaching conclusions about the nature of the change through which Christ becomes present in the sacrament of the Eucharist, and about the nature of this continuing presence. Although the object to which the thesis relates is provided by doctrinal and theological affirmations, the perspective within which the investigation takes place is that of the reflective rationality distinctive of philosophy. Put differently, the aim of the thesis is to examine the speculative rational work undertaken by Thomas Aquinas in the course of his discussion of issues relating to the change of bread and of wine into the body and blood of Christ in the Eucharist - a discussion that Thomas introduces by first arguing to traditional Catholic belief about the outcome of this change. The examination engages with the reasonable explanatory power of the conceptual resources and the philosophical arguments drawn upon by the Angelic Doctor in his systematic study of the Eucharistic change, and of the implications of this change relative to the continuing presence of Christ in the Eucharist. 2. Scope of the Thesis. The parameters of the thesis are set by St Thomas’s discussions of Eucharistic change and presence that take place in part three, questions 75-77, of his Summa Theologiae, book four, chapters 60-68, of his Summa contra Gentiles, and book four, distinctions 10-11, of his Scriptum super Libris Sententiarum Petri Lombardi. Within these parameters are to be included contributions to the issues discussed by St Thomas made by Thomas de Vio Cajetan, Domingo Banez, and Silvester of Ferrara (Ferrariensis), major commentators on the work of Thomas. Extensive presentation, and scrutiny, of opposing arguments from Duns Scotus are also included. Following an introductory chapter concerned to situate, summarise, and indicate its principal assumptions, the thesis explores what is, for St Thomas, a major objection to affirming the substantially real presence of Christ in the Eucharist: such an affirmation is said to imply the ontological impossibility that Christ’s bodily reality is simultaneously present in more than one place. The response to this objection involves an analysis of the distinction between the primary and the secondary formal effects of dimensive quantity, and the use of this distinction to argue at some length that one and the same material thing may be simultaneously present in more than one place if the secondary formal effects of dimensive quantity that would spatially situate this thing in relation to its immediate surroundings are suspended. The thesis then considers three issues dealing with what becomes of the substance of the bread and of the wine at the Eucharistic consecration. In the first of these, Thomas rejects the claim that the substance of the bread and of the wine remains in existence on the altar, affirming that the bread and wine are changed at the level of substance into the body and blood of Christ. This position requires, and receives, sustained treatment of philosophical questions concerning ‘substance’, and change affecting the whole substance of a thing (within a hylomorphic understanding of material realities). Related problems of individuation, causal agency, and the logic of language that both signifies, and brings about, change, are considered. The second issue investigates the claim that the substance of the bread and of the wine is not changed after all into the body and blood of Christ but is either annihilated or changed into matter-in-an-earlier-state. This claim is rejected by St Thomas on philosophical grounds, and this section of the thesis engages critically with Cajetan on several points connected with Thomas’s arguments The third issue concerns, and affirms, the capacity of bread and wine to be changed substantially into the body and blood of Christ, at which point the thesis widens out to contrast a hylomorphic with a hylomeric account of matter, and to consider at some length Duns Scotus’s metaphysics of the Eucharist which oppose those of St Thomas. Chapter six of the thesis explores in some detail the responses of Cajetan and Ferrariensis to the challenges issued by Scotus, and the concluding chapter (chapter seven) provides an analysis of Thomistic ideas regarding three modes of the emergence of being: creation, natural change, transubstantiation. 3. Conclusions. The title asserts that the thesis is “an examination of the Thomistic metaphysics of the Eucharistic presence”. This examination endorses the following conclusions: 3.1 The schemata of metaphysical concepts employed by St Thomas (e.g. the concepts of substance, accident, esse, primary matter, substantial form, creation, natural change, obediential potentiality, primary/secondary formal effects of dimensive quantity), and his lines of philosophical argument, provide a clearly valid response to “the exigencies of the inquiring mind at work” in relation to the presence of Christ in the Eucharist. In other words, their reasonable explanatory power is evidently to be affirmed. 3.2 Pari passu the thesis indicates something of what could be called ‘the mystery of matter’ – the inexhaustible depths and potentialities of matter that the inquiring mind confronts when exploring matter in the distinctive situation that is matter’s special dependence on the First Cause in the Eucharistic change (transubstantiation). 3.3 The thesis is an instance of philosophical work undertaken in the first decade of the 21st century, and within the socio-cultural context of this time. This socio-cultural ‘situatedness’, although vastly different from the socio-cultural ‘situatedness’ of Thomas Aquinas, Duns Scotus, Cajetan, Ferrariensis, and Banez, has created no culturally relative barrier - no ‘incommensurability’ - such as to prevent an understanding of the conceptual/argumentative activity in which these thinkers engaged some centuries ago. Human beings always and everwhere ‘fit into’ the same Universe through their abiding and ineluctably shared openness to being and its first principles.

The phenomenon of addiction has been a subject of investigation for a number of academic disciplines, but little has been written about addiction from a philosophical perspective. This dissertation inserts philosophy into the conversations taking place within the multi-disciplinary field of “Addiction Studies.” It contends that the philosophical accounts of human action given by Aristotle and St. Thomas Aquinas provide means for an analysis of many of the conceptual confusions in the field of Addiction Studies, including those surrounding the concepts of choice, compulsion, and habit. It argues that the category of habit in these two thinkers is richer and more complex than contemporary conceptions of habit and that the category of habit in its Aristotelian and Thomistic guises is indispensable for charting an intelligible path between the muddled polarities that construe addiction as either a disease or a type of willful misconduct. Furthermore, it suggests that recognizing the distance between Aristotle’s social context and the modern social context affords powerful insight into the character of modern addiction, and that an exploration of the parallels between the habit of addiction and Aquinas’s development of the habit of charity offers suggestive inroads for thinking about addiction as a moral strategy for integrated and purposive action.

This thesis presents a Thomistic account of divine providence and human freedom. I defend and develop the traditional view by adopting some contemporary interpretations of it. I argue that the Thomist solution provides an idea that divine providence is compatible with libertarian freedom. In the first chapter I provide the definition of divine providence, which is God’s continuing action in preserving his creation. In another word, not only does God create the universe and conserve it in existence at every moment, but he also guides it according to his purpose. In the second chapter, I critically examine three solutions to the problem of providence and human freedom. They are compatibilism, open theism, and Molinism. I argue that the solutions are unsatisfactory in that they too easily give up some of the important doctrines concerning God and humans. In Chapter III, I develop a Thomistic account of divine providence and human freedom. The Thomistic theory, I argue, well preserves traditional doctrines concerning both God and humans without damaging either providence or libertarian freedom for humans. In particular, I briefly examine some characteristics of God, which are timelessness and his activity as the First Cause. Based on these features of God’s nature, I show how human beings enjoy entire freedom in the libertarian sense although God has complete sovereignty over human free choices in the world. If the present view is correct, what makes it less attractive is that the theory seems to make God the author of sin. So I finally deal with the problem of moral responsibility and the problem of evil and sin, showing that humans, not God, are the author of sin. I contend that God wills that humans sin but he has a certain purpose for doing so within his providence. But that never destroys human freedom, so humans are responsible for their decisions and actions. Within the Thomistic explanation we can have a logically coherent view of compatibility of divine providence with libertarian freedom of humans. In the last chapter, I summarize my argument and deal with some implications of it.

Thesis--Berlin, 1908.

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Thesis advisor: Peter Kreeft / Thomas Aquinas is generally viewed as the chief proponent of the theory of delayed animation, the view that the human embryo does not at first have the rational soul proper to human beings. Thomas follows Aristotle's embryology, in which an embryo is animated by a succession of souls. The first is a nutritive soul, having the powers of growth, nutrition, and generation. The second is a sensitive soul, having the additional powers of locomotion and sensing. The third and final soul is the human, or rational soul, which virtually includes the nutritive and sensitive souls. Because Thomas holds that there is only one substantial form of a composite, none of these forms overlap to provide continuity. It is therefore exceedingly difficult to speak of the embryo as one enduring subject through the succession of souls. Moreover, because of the way that the nutritive soul is associated with plants, and the sensitive soul is associated with animals, interpreters generally hold that for Thomas the embryo is first a plant, then an animal, and with the advent of the rational soul, finally a human being. Those who write about the ontological status of the embryo assume that delayed animation necessarily entails delayed hominization, that is, that the embryo only becomes human at a later stage of its development, when it receives the rational soul. Those who hold a delayed animation view of the embryo often invoke Thomas' schedule of successive souls in the embryo as a model for viewing it as not yet human in early stages of development, linking hominization to the ability to perform intellectual operations. That Thomas specifies that a body must be sufficiently organized before the advent of the rational soul seems to them to solidify their view of the embryo as not sufficiently organized to be truly human. Additionally, even outside of an explicitly Thomist framework, Thomist metaphysical principles are often invoked in arguments that center on twinning and totipotency of blastomeres in the early embryo, and whether that early embryo is one individual if it is potentially many. Those who hold immediate animation views (i.e., the embryo receives the rational soul at once, with no mediate states) often adopt the strategy of importing modern data on the internal organization and self-directed development of the embryo, and argue that if only Thomas had known that the zygote was not unformed and undifferentiated, that it has within itself all it needs to become a mature adult human, he would have held that the embryo is immediately suited to receive the rational soul, and thus is human from conception. In this way they attempt to employ a change in scientific data to negate the need for a succession of forms in the embryo. The author identifies the being of the human embryo as a prior metaphysical problem within Thomas' work, and advances a different interpretation of his views: that the embryo, even before the advent of the rational soul, is human. To establish this claim, she traces the problems which emerge in the current debate about when the embryo becomes human, and argues that contrary to expectation, it is not necessary to equate immediate rational animation with immediate hominization, demonstrating that all other approaches yield results entirely untenable for Thomas. A survey of texts reveals that Thomas did in fact view the embryo as human before the rational soul, though he does not methodically work out the implications of that view in a number of areas. Moreover, a distinction based on a passage in Aristotle's Generation of Animals with regard to an additional meaning of generation may resolve the ambivalence in Thomas' account of the embryo as passive under the formative power of the father's semen. Finally, a third meaning of generation is offered to show that Thomas recognized and wished to resolve the difficulty of explaining the continuity and identify of the embryo in the succession of souls. What results is an immediate hominization view of the embryo that, because it accommodates Thomas' succession of souls and does not depend upon importing modern biological data on the embryo, is consistent with Thomas' account, and is thoroughly cognizant of the way Thomas viewed human nature and the final end of human being. / Thesis (PhD) — Boston College, 2013. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Philosophy.

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In this dissertation, I claim that Gregory Palamas' teaching on the uncreated light of the transfigured Christ is best understood when interpreted through the category of theophany, namely, the appearance or vision of God. For Palamas, the Transfiguration is the theophany which manifests the full implications of the hypostatic union. As a revelation of the uncreated divinity of Christ (the vision of God), the Transfiguration anticipates, makes present, and partially effects the eschatological deification that takes place fully in the face to face vision of God. Palamas' teaching on the Transfiguration as theophany synthesizes insights from the Eastern patristic tradition regarding theology of revelation, deification, and eschatology. Palamas' theology of the Transfiguration and theophany presupposes a theophanic and therefore Christocentric economy of salvation which sees the Son of God as the theophanic mediator between God and man beginning with creation, through the theophanies of the Old Testament, and culminating in his Incarnation and the face to face vision of God in the fully glorified Christ in the eschaton. Palamas' theology of revelation (essence and energies), deification, and eschatology cannot be properly understood without taking into account their theophanic foundation. Furthermore, I claim that Palamas' synthesis of the Eastern patristic tradition concerning the Transfiguration and theophany can aid Roman Catholic theology in recovering a series of insights concerning the Transfiguration as the vision of God in this life contained in its shared patristic heritage with the Christian East. Central to this claim is that Thomas Aquinas' teaching on the Transfiguration and theophany is inadequate for the task of such a retrieval (his view of theophany does not permit it) and that Palamas' synthesis can show Roman Catholic theology the way back to its theophanic Eastern patristic heritage. / McAnulty College and Graduate School of Liberal Arts; / Theology / PhD; / Dissertation;

The current state of the personal ontology debate can be summarized as a disagreement between two roughly distinct camps. First, there are those philosophers who argue that personal identity consists of psychological continuity. According to the psychological continuity theorist, ones identity over time is traced by following a series of memories, beliefs, desires, or intentions. Opposed to psychological continuity theories are those who argue that personal identity consists of biological continuity. So-called animalists suggest that our identity corresponds to that of a human organism, a member of the species Homo Sapiens. As long as the event of the organisms life continues, there too do we persist, according to the animalist. It is my contention that both views suffer difficulties found when exploring their metaphysical commitments and responses to certain widely-discussed thought experiments. In this thesis, I aim to resurrect the ancient view of hylomorphism, by which I mean the view espoused by Aristotle and adapted by St. Thomas Aquinas that posits matter and form as the basic constituents of every material object. As a theory of personal ontology, I argue that hylomorphism has the resources to provide a formidable challenge to the two main views. I will offer hylomorphic responses to general problems faced by accounts of personal identity such as intransitivity, circularity, fission, and composition, and show how its answers are an improvement over those given by psychological continuity theory and animalism.

The current state of the personal ontology debate can be summarized as a disagreement between two roughly distinct camps. First, there are those philosophers who argue that personal identity consists of psychological continuity. According to the psychological continuity theorist, ones identity over time is traced by following a series of memories, beliefs, desires, or intentions. Opposed to psychological continuity theories are those who argue that personal identity consists of biological continuity. So-called animalists suggest that our identity corresponds to that of a human organism, a member of the species Homo Sapiens. As long as the event of the organisms life continues, there too do we persist, according to the animalist. It is my contention that both views suffer difficulties found when exploring their metaphysical commitments and responses to certain widely-discussed thought experiments. In this thesis, I aim to resurrect the ancient view of hylomorphism, by which I mean the view espoused by Aristotle and adapted by St. Thomas Aquinas that posits matter and form as the basic constituents of every material object. As a theory of personal ontology, I argue that hylomorphism has the resources to provide a formidable challenge to the two main views. I will offer hylomorphic responses to general problems faced by accounts of personal identity such as intransitivity, circularity, fission, and composition, and show how its answers are an improvement over those given by psychological continuity theory and animalism.