This thesis addresses the historic debate between natural law theorists and positivists. After providing a foundation for the debate by discussing the thirteenth century natural law theory of St. Thomas Aquinas and the criticisms of it by positivist philosopher John Austin, this thesis turns to the theory of H.L.A. Hart. My primary aim is to outline a defense of the soft positivism of H.L.A. Hart in face of the criticisms of Ronald Dworkin by appealing to two nonexclusive roots of moral principles in the law: justice and criminal law.

The dissertation is an examination of obligation, which I argue is a mode of rational necessity that is proper to human agency. I begin from G. E. M. Anscombe’s celebrated attack against modern moral philosophy, and then sketch a positive theory of obligation as it figures in morality and in law, drawing upon the work of Aquinas and Aristotle. The first chapter explicates this idea of “practical necessity” and the second chapter shows that Aristotelian ethics, because it is not a theological law conception of ethics, has no place for a peculiarly moral conception of obligation. The third chapter examines Aquinas’s conception of moral law and argues that Aquinas vindicates Anscombe’s negative critique of the “moral ought.” The fourth chapter shows that the application of exceptionless moral norms (i.e. moral absolutes), which is one kind of obligation, requires attention to aspects of social practices. Attention to social practices allows the resolution of controverted problems about specifying intentions and applying the principle of double effect in a way that makes exceptionless moral norms workable. The fifth and final chapter defends the conception of intentional action assumed in the fourth chapter, and demonstrates that the scholastic ‘sub specie boni’ thesis is an integral part of action explanation, as well as Anscombe’s notion of “practical knowledge”. The upshot of the dissertation is an integrated investigation into how the ideas of good and necessity figure in ethics, law, and human action. / text

Malgré l’acceptation théorique et pratique que l’astrologie médiévale rencontre au 13e siècle latin, son statut philosophique ambigu tient, au moins en partie, à son double partage en art mécanique et en science libérale. Plus mystérieux encore reste le fait qu’elle apparaisse en Occident sans devoir violenter les cadres philosophiques où elle s’inscrit, aussi chrétiens soient-ils. Du point de vue de l’histoire de la philosophie, ce que cette arrivée en douceur passe sous silence, c’est l’enracinement conceptuel toujours déjà préétabli du projet astrologique à l’intérieur d’un contexte philosophique plus global, dans et par lequel l’idée d’influence astrale valide sa raison d’être. En passant par la philosophie naturelle et la métaphysique de Thomas d’Aquin, ce travail veut montrer comment l’astrologie médiévale survient en terres chrétiennes à partir de la rencontre de la hiérarchie causale de l’être propre à l’arabo-aristotélisme néo-platonisant avec une théologie de la providence divine. D’aporie en aporie, la déconstruction de ce que toute astrologie présuppose prend place, de sorte qu’il devient possible de comprendre l’aspect rationnel et proprement philosophique de l’entreprise astrologique au Moyen Âge. / In spite of the theoretical and practical acceptation that medieval astrology is greeted with during the 13th century in the Latin world, its philosophically ambiguous nature is due, at least partly so, to the distinction made between mechanical arts and liberal sciences. Even more mysterious is the fact that it appears in Occident without having to violate the peripheries of Latin philosophy, as Christian as it could be. From a history of philosophy point of view, this rather smooth entrance seems to imply that the astrological project is always-already conceptually rooted in a philosophical context larger than itself, by which it validates its raison d’être. Through the study of Thomas Aquinas’ natural philosophy and metaphysics, this work demonstrates that medieval astrology could occur among the Christian world whenever the causal hierarchy of being brought forth by Arabic aristotelianism and Neo-Platonism walked hand in hand with the Christian theology of divine providence. From an aporia to another, the deconstruction of what any astrology presupposes therefore takes place, from which it becomes possible to properly understand both the rational and philosophical aspect of the astrological enterprise during the Middle Ages.

The present dissertation concerns cognitive psychology--theories about the nature and mechanism of perception and thought--during the High Middle Ages (1250-1350). Many of the issues at the heart of philosophy of mind today--intentionality, mental representation, the active/passive nature of perception--were also the subject of intense investigation during this period. I provide an analysis of these debates with a special focus on Durand of St.-Pourçain, a contemporary of John Duns Scotus and William of Ockham. Durand was widely recognized as a leading philosopher until the advent of the early modern period, yet his views have been largely neglected in the last century. The aim of my dissertation, then, is to provide a new understanding of Durand's cognitive psychology and to establish a better picture of developments in cognitive psychology during the period. Most philosophers in the High Middle Ages held, in one form or another, the thesis that most forms of cognition (thought, perception) involve the reception of the form of the object into the mind. Such forms in the mind explain what a given episode of cognition is about, its content. According to what has been called the conformality theory of content, the content of our mental states is fixed by this form in the mind. Durand rejects this thesis, and one of the primary theses that I pursue is that Durand replaces the conformality theory of content with a causal theory of content, according to which the content of our mental states is fixed by its cause. When I think about Felix and not Graycat, this is to be explained not by the fact that I have in my mind the form of Felix and not Graycat, but rather by the fact that Felix and not Graycat caused my thought. This is both a controversial interpretation and, indeed, a controversial theory. It is a controversial interpretation because Durand seems to reject the thesis that objects are the causes of our mental states. In the first half of the present dissertation, I argue that Durand does not reject this thesis but he rejects another nearby thesis: that objects as causes give to us 'forms'. On Durand's view, an object causes a mental state even though it does not give to us a new 'form'. In the second half of the dissertation I defend Durand's causal theory of content against salient objections to it.

The present dissertation concerns cognitive psychology--theories about the nature and mechanism of perception and thought--during the High Middle Ages (1250-1350). Many of the issues at the heart of philosophy of mind today--intentionality, mental representation, the active/passive nature of perception--were also the subject of intense investigation during this period. I provide an analysis of these debates with a special focus on Durand of St.-Pourçain, a contemporary of John Duns Scotus and William of Ockham. Durand was widely recognized as a leading philosopher until the advent of the early modern period, yet his views have been largely neglected in the last century. The aim of my dissertation, then, is to provide a new understanding of Durand's cognitive psychology and to establish a better picture of developments in cognitive psychology during the period. Most philosophers in the High Middle Ages held, in one form or another, the thesis that most forms of cognition (thought, perception) involve the reception of the form of the object into the mind. Such forms in the mind explain what a given episode of cognition is about, its content. According to what has been called the conformality theory of content, the content of our mental states is fixed by this form in the mind. Durand rejects this thesis, and one of the primary theses that I pursue is that Durand replaces the conformality theory of content with a causal theory of content, according to which the content of our mental states is fixed by its cause. When I think about Felix and not Graycat, this is to be explained not by the fact that I have in my mind the form of Felix and not Graycat, but rather by the fact that Felix and not Graycat caused my thought. This is both a controversial interpretation and, indeed, a controversial theory. It is a controversial interpretation because Durand seems to reject the thesis that objects are the causes of our mental states. In the first half of the present dissertation, I argue that Durand does not reject this thesis but he rejects another nearby thesis: that objects as causes give to us 'forms'. On Durand's view, an object causes a mental state even though it does not give to us a new 'form'. In the second half of the dissertation I defend Durand's causal theory of content against salient objections to it.

This thesis examines a primary question raised by both Aristotle and Thomas Aquinas: What constitutes the beginning of a human being? Aristotle and Aquinas raise this question for very different reasons. Modern critical commentators revisit it for their own reasons, namely for the purposes of ethical debates surrounding conception and abortion. They frequently attribute the notions of delayed ensoulment and quickening to Aristotle. Through examination of the primary texts, I demonstrate that this attribution is erroneous. Aristotle contends that ensoulment is substantially complete at conception, though subject to gradual actualization throughout the lifespan of a human being; while Thomas suggests that conception is a process, requiring several substantial changes before a human soul is infused. I argue that Aquinas adapts Aristotle in accordance with his Christian theological commitments, and modern commentators follow him to develop their own notions of delayed ensoulment and quickening.

Ma thèse montre la présence et le rôle de la métaphysique dans Vérité et méthode. Elle tente de démontrer que Gadamer s'inspire du néoplatonisme pour surmonter le subjectivisme de la modernité et propose une métaphysique à cette fin. Après avoir expliqué comment Gadamer se réapproprie l’héritage de la pensée grecque pour critiquer la modernité en situant son interprétation de Platon par rapport à celle de Heidegger, je montre que Gadamer s’approprie la conception de l’être de Plotin de façon telle qu’il peut s’y appuyer pour penser l’autoprésentation de l’être dans l’expérience herméneutique de la vérité. L’art va, pour ce faire, redevenir sous la conduite du néoplatonisme source de vérité. Gadamer redonne en effet une dignité ontologique à l’art grâce à la notion d’émanation, notion qui permet de penser qu’il y a une présence réelle du représenté dans sa représentation, celle-ci émanant du représenté sans l’amoindrir, mais lui apportant au contraire un surcroît d’être. La notion d’émanation permet ensuite à Gadamer d’affirmer le lien indissoluble qui unit les mots aux choses. En effet, la doctrine du verbe intérieur de Thomas d’Aquin implique ce lien que Platon avait occulté en réduisant le langage, comme la logique, à n’être qu’un instrument de domination du réel. L’utilisation de la notion néoplatonicienne d’émanation permet donc de dépasser la philosophie grecque du logos et de mieux rendre compte de l’être de la langue. Je montre ensuite comment Gadamer radicalise sa pensée en affirmant que l’être qui peut être compris est langage, ce qui veut dire que l’être, comme chez Plotin, est autoprésentation de soi-même. Pour ce faire, Gadamer rattache l’être du langage à la métaphysique néoplatonicienne de la lumière. Les dernières pages de Vérité et méthode rappellent en effet que la splendeur du beau est manifestation de la vérité de l’être. On rattachera alors le concept de vérité herméneutique à ses origines métaphysiques. La vérité est une manifestation de l’être dont on ne peut avoir part que si on se laisse submerger par sa lumière. Loin d’être affaire de contrôle méthodique, l’expérience de la vérité exige de se laisser posséder par ce qui est à comprendre. Je démontre ainsi que Gadamer a découvert dans le néoplatonisme des éléments permettant de s’opposer à la dictature du sujet moderne, dictature qui doit être renversée, car elle masque le réel rapport de l’homme à la vérité en faisant abstraction de la finitude de son existence concrète. La critique du subjectivisme moderne sous la conduite du néoplatonisme ouvre ainsi le chemin vers une métaphysique de la finitude. / My thesis shows the presence and role of metaphysics in Truth and Method. It attempts to show that Gadamer builds upon Neoplatonism to overcome the subjectivism of modernity and offers a metaphysics in this regard. It explains how Gadamer reclaims the legacy of Greek thought to criticize modernity, placing his interpretation of Plato compared to that of Heidegger, I argue that Gadamer appropriates Plotinus’ concept of being in such a way that it may lean to think of self-presentation of being in the hermeneutic experience of truth. In that sense, art is going to be a source of truth under the leadership of Neoplatonism. Gadamer gives an ontological dignity to art through the concept of emanation, a concept which suggests that there is a real presence of the represented in its representation, the latter derived from the represented without weakening it, providing it instead with more being. The concept of emanation then gives Gadamer an opportunity to affirm the indissoluble bond that unites words and things. Thomas Aquinas’ doctrine of the inner word indeed implies the link that Plato had covered up by making language, like logic, a mere domination instrument of the real. The use of the Neoplatonic concept of emanation makes it possible to overcome the logos of Greek philosophy and to better account for the being of language. I then show how Gadamer radicalized his thinking as he says that the being that can be understood is language, which means that being, as in Plotinus, is self-presentation. To this end, Gadamer links the being of language to Neoplatonic metaphysics of light. The last pages of Truth and Method recall indeed that the splendor of beauty is an expression for the truth of being. The concept of hermeneutic truth is then connected to its metaphysical origins. Truth is a display for the being in which we can partake only if one gets overwhelmed by its light. Far from being a matter of methodical control, the experience of truth requires to be possessed by what must be understood. In this way, I demonstrate that Gadamer found in Neoplatonism elements to challenge the dictatorship of the modern subject, which must be reversed because it hides the real relationship of man with truth by ignoring the finitude of its concrete existence. The criticism of modern subjectivism led by Neoplatonism opens the way to a metaphysics of finitude.

This dissertation explores the development of the concept of synderesis between 1150 and 1450. In medieval moral psychology, synderesis referred to the innate capacity of the mind to know the first principles of natural law, or, alternatively, the will to follow these principles. But it was also interpreted as a mystical power of the soul, capable of uniting it to God. synderesis also appears in Late Medieval vernacular literature, as a character in moralising texts. By approaching synderesis from the point of view of conceptual history I synthesise these fields and explore how synderesis operated beyond the formal treatises of scholastic theology. Chapter two explores how synderesis developed in medieval scholasticism from Peter Lombard up to Thomas Aquinas. Chapters three and four explore how the mystical interpretation of synderesis first proposed by Thomas Gallus of Vercelli was incorporated into the mystical treatise Itinerarium mentis in Deum by Bonaventure of Balneoregio. Here, I analyse when, where and how Bonaventure integrated this mystical interpretation into his pre-existing moral-psychological interpretation of it and how his use of synderesis relates to the historical context in which the Itinerarium was written. I argue that synderesis should be seen as existing on a continuum of interpretations between moral psychology and mysticism. After Bonaventure and Aquinas, the concept undergoes a period of stagnation in academia, which is the subject of Chapter five. However, synderesis also appears in a number of non-academic texts in which the moral-psychological and mystical interpretations of the term coexist. Chapter six explores how Late Medieval vernacular authors drew on previous scholastic discussions of the concept. I focus here in particular on Guillaume de Deguileville's Le pèlerinage de l'âme, where synderesis appears not as the moral guide of the soul, but as the accuser of the soul before the court of heaven.

Les notions d'essentialisme et d'existentialisme ont souvent été utilisées par les commentateurs et spécialistes contemporains pour désigner respectivement les philosophies d'Avicenne et de Thomas d'Aquin. Cependant, ces qualificatifs leur ont souvent été apposés sur la base d'une étude fragmentaire de leur pensée, et sans qu'une définition précise et uniforme n'en ait été donnée. En tant que fondateur d'un système philosophique constituant une synthèse critique de différents courants de pensées, Molla Sadrâ a été à l'origine d'une nouvelle réflexion sur la question de l'existence. Alliée à sa pensée critique au sujet de systèmes philosophiques l'ayant précédé, sa philosophie peut constituer une nouvelle base de réflexion sur le sens des notions d'existentialisme et d'essentialisme, ainsi que sur la façon dont Avicenne et S. Thomas ont pensé l'existence. La philosophie sadrienne est ici mise à contribution en vue de présenter une analyse du statut de l'existence dans les philosophies avicennienne et thomasienne dans un cadre à la fois global et critique, et de mettre en relief certaines options fondamentales de leur pensée. L'analyse est complétée par une évaluation critique de la façon dont certains commentateurs ont appréhendé et compris le statut de l'existence dans ces deux pensées. / The notions of essentialism and existentialism have often been used by contemporary commentators and scholars to refer respectively to the philosophies of Avicenna and Thomas Aquinas. However, these attributions have often taken place of the basis of fragmentary studies of their thought, whereas no precise and uniform definition of such notions has been given. As the founder of a philosophical system which constitutes a critical synthesis of different schools of thought, Molla Sadra is at the origin of a new reflection on the issue of existence. Along with a critical thinking about some philosophical systems that preceded it, his philosophy may provide a new basis for a reflection on the meaning of the notions of existentialism and essentialism, as well as on how Avicenna and S. Thomas have thought and tackled the issue of existence. In this study, the Sadrian philosophy is used in order to present an analysis of the status of existence in the philosophies of Avicenna and Thomas Aquinas within a comprehensive and critical framework, and to highlight some fundamental options of their thought. The analysis is complemented by a critical assessment of how some commentators have apprehended and understood the status of existence in these two thoughts.

Submitted by Noeme Timbo (noeme.timbo@metodista.br) on 2016-09-23T18:12:35Z No. of bitstreams: 1 Elie Chaderevian.pdf: 1026349 bytes, checksum: 6788870b9b5b8cb8d636dc2dfa5007e7 (MD5) / Made available in DSpace on 2016-09-23T18:12:35Z (GMT). No. of bitstreams: 1 Elie Chaderevian.pdf: 1026349 bytes, checksum: 6788870b9b5b8cb8d636dc2dfa5007e7 (MD5) Previous issue date: 2016-03-18 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The proposal of the new Catechism of the Catholic Church is, from an abstract point of view, transformative and even revolutionary, if we think, for example, on the extraordinary importance that, for the first time, is given to the lay faithful, as full members of the Church, and in the daily life, due to a new conception of the reach of Baptism, whose physical and metaphysical dimensions (natural and supernatural), drive their persons to act no longer as simple "members card-carrying", but as son/daughter of God, effectively imbued of divinity, which is clearly noticeable by the perspective of the concept of participation - the participatio - developed by Thomas Aquinas, which permeates all new Catechism of the Catholic Church in its four major parts (the doctrine of faith # 26 - # 1065, the Liturgy # 1066 - # 1690, Moral # 1691 - # 2557 and lives of Prayer # 2558 - # 2865), as is shown in this study, where 234 instances of participation and its related (to participate, participant etc.) were recorded, of which 171 (73%) are in the deepest sense proposed by Thomas. However, in this quarter century, since it was promulgated the CIC, it's not noted in the pastoral and in the Catholic education the corresponding significant expected changes. / A proposta do novo Catecismo da Igreja Católica é, do ponto de vista abstrato, transformadora e mesmo revolucionária, se pensarmos, por exemplo, na extraordinária importância que, pela primeira vez, se dá ao papel do fiel leigo, como membro pleno da Igreja, e à vida quotidiana, decorrentes de uma nova concepção do alcance do Batismo, cujas dimensões física e metafísica (natural e sobrenatural) impulsionam seus sujeitos a agir não mais como simples “membros de carteirinha”, mas como filhos de Deus efetivamente impregnados de divindade, o que é claramente perceptível sob a perspectiva do conceito de participação – a participatio – desenvolvido por Tomás de Aquino, que permeia todo o novo Catecismo da Igreja Católica em suas quatro grandes partes (a doutrina da fé #26 - #1065, a Liturgia #1066 - #1690, a Moral #1691 - #2557 e a vida de Oração #2558 - #2865), como é demonstrado neste trabalho, onde, 234 ocorrências de participação e suas correlatas (participar, participante etc.) foram registradas, das quais, 171 (73%) são no sentido mais profundo proposto por Tomás. No entanto, neste quarto de século, desde que foi promulgado o CIC, não se nota na pastoral e na educação católicas as correspondentes significativas mudanças que seria de esperar