Cette thèse est consacrée à une analyse doctrinale et philologique du commentaire de Thomas d'Aquin sur la distinction 35 du premier Livre des Sentences de Pierre Lombard. Le sujet de cette distinction est la science que Dieu a de lui-même et des autres choses. La première partie de notre travail est une présentation conceptuelle et historique de l'arrière-fond de cette distinction. Elle est divisée en quatre étapes. Dans la première, nous nous sommes interrogé sur la science divine dans une perspective linguistique. Dans la seconde, nous avons discuté le rôle de l'autre, en tant qu'objet, dans la connaissance divine. Dans la troisième,nous avons étudié la synthèse chez Thomas des éléments aristotéliciens et pseudo-dionysiens, comme la notion d'actus purus et la notion d'esse. La quatrième étape, présente brièvement le contexte historique pour comprendre la méthode du commentaire des Sentences, ainsi qu'un bref panorama de l'Université de Paris au XIIIe siècle. La deuxième partie de la thèse offre une édition critique de la distinction 35. Après avoir collationné les témoins manuscrits selon les critères de la Commission Léonine, nous avons présenté le texte avec une introduction où nous établissons les différentes familles de la transmission textuelle. / This dissertation provides a doctrinal and philological study of Aquinas' Commentary on Book I, dist. 35 ofPeter Lombard's Sentences. At issue is the knowledge that God has of Himself and of the things other thanHimself. The first part of the dissertation investigates the conceptual and historical background of dist. 35. Itdivides into four sections. First, we approach the topic of the divine science from a linguistic perspective.Secondly, we examine the role of things other than God as objects of the divine knowledge. Thirdly, we drawattention to Aquinas' synthesis of Aristotelian and pseudo-Dionysian elements, namely the notions of actuspurus and esse. The fourth section provides an overview of the historical context and the XIIIth-centuryUniversity of Paris, in order to better understand the method of commentaries on the Sentences. The secondpart of the dissertation intends to provide, for the first time, the critical edition of Aquinas' Commentary onBook I, dist. 35 of Peter Lombard's Sentences. The manuscripts are collated according to LeonineCommission's criteria. The critical text is introduced by a philological study in which we investigate the textualtransmission of dist. 35 and we propose a stemma.

Este trabalho sustenta que o teólogo cristão do início do século VI conhecido como Pseudo Dionísio Areopagita exerce profunda influência no pensamento do teólogo e filósofo medieval Tomás de Aquino (1225-1274). Essa influência se dá principalmente em dois temas fundamentais da filosofia tomasiana: negatividade e participação. Negatividade diz respeito ao caráter de mistério que envolve as essências mais íntimas dos seres desde a natureza visível e o homem até o princípio de todas as coisas, Deus e que, portanto, não são plenamente compreensíveis para o entendimento humano. Participação se refere ao fato de que, por outro lado, o mundo participa do ser de Deus e, por isso, revela traços do divino, ainda que de modo deficiente e remoto. Dada essa influência de Dionísio, Tomás de Aquino não pode ser considerado um pensador racionalista, com respostas definitivas para todos os problemas da existência, como costuma ser visto por epígonos o que constitui uma deturpação do pensamento tomasiano, marcado pela consciência da insuficiência da razão. Para Tomás, não é possível aos homens ter clareza absoluta sobre qualquer assunto, daí, por exemplo, a necessidade de eles se conduzirem segundo a clássica doutrina cristã da prudência a virtude de agir corretamente, com base no límpido conhecimento da situação presente. Tendo em vista a negatividade e a participação, para o acesso às realidades mais profundas impõe-se o uso de metáforas, alegorias e símbolos, capazes de algum modo de se aproximar do que, afinal, é incognoscível. No que se refere ao conhecimento de Deus, a via de acesso é a mística entendida como uma experiência com o Absoluto que se dá num plano além da razão, e não aquém , uma vez que todo discurso racional, afinal, fala mais do homem do que de Deus. Como conclusão, este trabalho propõe que o pensamento negativo do Pseudo Dionísio Areopagita e de Tomás de Aquino precisa ser mais conhecido também por educadores, pois ele permite uma visão diferente da realidade, uma visão menos lógico-racionalista que tantos problemas tem trazido à sociedade contemporânea e mais sensível, lúdica e profunda, portanto, mais humana. No anexo, é apresentada a tradução, direta do original grego, do livro Da teologia mística, do Pseudo Dionísio Areopagita. / This dissertation argues that the Christian theologian of the early sixth century known as Pseudo-Dionysius Areopagite exerts profound influence on the thought of medieval theologian and philosopher Thomas Aquinas (1225-1274). This influence is mainly on two major topics of Aquinas philosophy: negativity and participation. Negativity means the character of mystery that involves the most intimate essence of beings from the natural world and man to the cause of all things, God and therefore not fully comprehensible to human understanding. Participation refers to the fact that, on the other hand, the world participates in the being of God and, therefore, shows traces of the divine, even in a poor and remote way. Given the influence of Dionysius, Aquinas can not be regarded as a rationalist thinker, with definitive answers to all problems of existence, as is often seen by followers which is a perversion of Aquinass thought, marked by awareness of the insufficiency of reason. For Aquinas, it is not possible for men to have absolute clarity on any issue, then, for example, requiring them to conduct themselves according to the classical Christian doctrine of prudence the virtue of doing right, based on clear understanding of the current situation. Given the negativity and participation, accessing deeper realities requires the use of metaphors, allegories and symbols, which are able somehow to get closer to that, after all, is unknowable. With regard to knowledge of God, the way of access is the mystique understood as an experience of the Absolute that is given beyond reason, and not short , since all rational discourse, after all, speaks more about man than about God. In conclusion, this study suggests that the negative thought of Pseudo-Dionysius Areopagite and Thomas Aquinas should be more well known by educators, because it allows a different view of reality, less logical-rationalist that has brought many problems to contemporary society and more sensitive, playful and profound, therefore, more human. The annex includes a translation directly from the original Greek of The mystical theology, by Pseudo-Dionysius Areopagite.

The sequence commentary emerged as a new branch of medieval commentary literature in the twelfth century. The sequence itself, sung in the Roman Mass, was a hugely influential genre—several thousands of sequence texts are known today—but the fact that the Middle Ages also produced commentaries on this liturgical poetry has been hitherto practically unknown and very few commentary texts have been edited. The present work is the first attempt at a broader presentation of the sequence commentary genre. It makes available in modern editions seven previously unedited expositions on the sequence Ad celebres rex for the feast of St Michael. Introductions to each edition discuss the motifs interpreted, the commentary technique used and the sources drawn upon. Manuscript interrelations and textual problems are also treated here. Editions of four prologues introducing collections of commentaries are also included. These texts, though not specifically tied to the commentaries on Ad celebres rex, are presented here since they provide useful evidence of the interpretative frameworks chosen by the commentators. The complex textual transmissions of these texts have required three different editorial methods, which are discussed in a separate chapter. A general introduction surveys the sequence commentary material found to date. From these textual witnesses—nearly a hundred manuscripts listed in an appendix—we may conclude that the genre flourished mainly in the fourteenth and fifteenth centuries. Most manuscripts present large collections of commentaries on sequences for the whole liturgical year, generally preceded by a prologue and sometimes accompanied by a corresponding group of hymn commentaries.

This study performs a reading of Wittgenstein’s thought that integrates his sometimes sidelined remarks on aesthetics and belief, and emphasises consideration of language use on the level of practice. It analyses the many ways that Wittgenstein engages with the inexpressible or the limits of expression through comparison with poetry as a practice. The potential of a Wittgensteinian method of literary analysis concentrating on grammatical structures, exemplary forms of expression and quotidian meaning-making is shown by viewing several poets’ work in connection with specific forms of the inexpressible. This thesis consists of three parts. The first chapter surveys previous applications of Wittgenstein to aesthetic appreciation and analysis, and considers common interpretations of his earlier and later work. Incorporating a wide range of Wittgenstein sources allows a new reading to emerge that gives appropriate weight to his hitherto under-researched writings. This reading is tested in Chapters 2-5, in each case studying a poet or poets alongside a philosophical text or topic. Chapter 2 uses the negative theology of Pseudo-Dionysius to probe the ineffable; through Cora Diamond’s resolute reading of the Tractatus, Kei Miller’s ‘Church Women’ series and John Burnside’s intimate ineffable of ‘Parousia’, a grammatical understanding of inexpressibility emerges. Chapter 3 compares John McDowell’s minimal realism in Mind and World with Wallace Steven’s Supreme Fiction, demonstrating how Stevens’ – and Wittgenstein’s – rich conception of experience can close off a number of philosophical lacunae. Chapter 4 concentrates on the poetry of Jorie Graham, whose conception of the self is saturated with language. Parallels with Wittgenstein’s methodology are drawn, and some reminders issued to curb the excesses of postmodern accounts of subjectivity. The focus in Chapter 5 moves to the use of cartographical metaphor in Philosophical Investigations and Kei Miller’s poetry. The constraints of specific discourses on our thinking are examined, together with poetry’s potential for laying bare or reinvigorating the pictures by which we navigate. Finally, Chapter 6 discusses a selection of poetic projects completed alongside my research, to extend the reading of Wittgenstein into the area of creative practice. This thesis demonstrates Wittgenstein’s prolonged engagement with the limits of expression and with poetry, as well as the profit of a Wittgensteinian approach to poetry. It thereby questions a number of current responses to Wittgenstein’s work, and displays its own original creative outcomes.

Este trabalho sustenta que o teólogo cristão do início do século VI conhecido como Pseudo Dionísio Areopagita exerce profunda influência no pensamento do teólogo e filósofo medieval Tomás de Aquino (1225-1274). Essa influência se dá principalmente em dois temas fundamentais da filosofia tomasiana: negatividade e participação. Negatividade diz respeito ao caráter de mistério que envolve as essências mais íntimas dos seres desde a natureza visível e o homem até o princípio de todas as coisas, Deus e que, portanto, não são plenamente compreensíveis para o entendimento humano. Participação se refere ao fato de que, por outro lado, o mundo participa do ser de Deus e, por isso, revela traços do divino, ainda que de modo deficiente e remoto. Dada essa influência de Dionísio, Tomás de Aquino não pode ser considerado um pensador racionalista, com respostas definitivas para todos os problemas da existência, como costuma ser visto por epígonos o que constitui uma deturpação do pensamento tomasiano, marcado pela consciência da insuficiência da razão. Para Tomás, não é possível aos homens ter clareza absoluta sobre qualquer assunto, daí, por exemplo, a necessidade de eles se conduzirem segundo a clássica doutrina cristã da prudência a virtude de agir corretamente, com base no límpido conhecimento da situação presente. Tendo em vista a negatividade e a participação, para o acesso às realidades mais profundas impõe-se o uso de metáforas, alegorias e símbolos, capazes de algum modo de se aproximar do que, afinal, é incognoscível. No que se refere ao conhecimento de Deus, a via de acesso é a mística entendida como uma experiência com o Absoluto que se dá num plano além da razão, e não aquém , uma vez que todo discurso racional, afinal, fala mais do homem do que de Deus. Como conclusão, este trabalho propõe que o pensamento negativo do Pseudo Dionísio Areopagita e de Tomás de Aquino precisa ser mais conhecido também por educadores, pois ele permite uma visão diferente da realidade, uma visão menos lógico-racionalista que tantos problemas tem trazido à sociedade contemporânea e mais sensível, lúdica e profunda, portanto, mais humana. No anexo, é apresentada a tradução, direta do original grego, do livro Da teologia mística, do Pseudo Dionísio Areopagita. / This dissertation argues that the Christian theologian of the early sixth century known as Pseudo-Dionysius Areopagite exerts profound influence on the thought of medieval theologian and philosopher Thomas Aquinas (1225-1274). This influence is mainly on two major topics of Aquinas philosophy: negativity and participation. Negativity means the character of mystery that involves the most intimate essence of beings from the natural world and man to the cause of all things, God and therefore not fully comprehensible to human understanding. Participation refers to the fact that, on the other hand, the world participates in the being of God and, therefore, shows traces of the divine, even in a poor and remote way. Given the influence of Dionysius, Aquinas can not be regarded as a rationalist thinker, with definitive answers to all problems of existence, as is often seen by followers which is a perversion of Aquinass thought, marked by awareness of the insufficiency of reason. For Aquinas, it is not possible for men to have absolute clarity on any issue, then, for example, requiring them to conduct themselves according to the classical Christian doctrine of prudence the virtue of doing right, based on clear understanding of the current situation. Given the negativity and participation, accessing deeper realities requires the use of metaphors, allegories and symbols, which are able somehow to get closer to that, after all, is unknowable. With regard to knowledge of God, the way of access is the mystique understood as an experience of the Absolute that is given beyond reason, and not short , since all rational discourse, after all, speaks more about man than about God. In conclusion, this study suggests that the negative thought of Pseudo-Dionysius Areopagite and Thomas Aquinas should be more well known by educators, because it allows a different view of reality, less logical-rationalist that has brought many problems to contemporary society and more sensitive, playful and profound, therefore, more human. The annex includes a translation directly from the original Greek of The mystical theology, by Pseudo-Dionysius Areopagite.

L’ambition de cette thèse, qui se présente en sept chapitres regroupés en trois parties, est de reprendre l’ensemble du Corpus dionysien pour en définir un principe de cohérence : la théologie négative. Dans le sillage des recherches antérieures, souvent centrées sur une des œuvres qui lui sont attribuées ou sur une thématique particulière, on s’est interrogé sur l’histoire et la complexité de plusieurs concepts centraux de l’œuvre : théologie négative, symbole, hiérarchie. Et, en proposant de considérer la Hiérarchie ecclésiastique comme l’achèvement du Corpus – c’est au bref traité de la Théologie mystique qu’on attribuait volontiers cette place – nous montrons comment l’apophase ou la théologie négative s’enrichit, s’approfondit, d’une dimension liturgique, au-delà de l'affirmation et de la négation. / The purpose of this thesis, consisting of seven chapters grouped under three sections, is to reconsider the whole dionysian Corpus and to define the principle of its consistency, that is negative theology. Following the previous research, often focusing on one of the treatises or a main theme, we start with the history and the complexity of several key concepts within the Corpus: negative theology, symbol, hierarchy. We suggest that Ecclesiastical Hierarchy should be considered as the final step of Dionysius’ theology (rather than Mystical Theology as usually), and that leads us to study how the apophasis or the negative theology deepens into a liturgical dimension, beyond affirmation and negation.

Cette thèse a pour but de présenter en détails l’importance de la théurgie dans la philosophie de Proclus, ainsi que sa relation avec la mystagogie. Un des premiers objectifs de la recherche est d’expliciter les raisons du jaillissement de la théurgie au cours de l’Antiquité tardive. Nous présentons ainsi le cadre historique d’où émerge la notion de théurgie dans un contexte de christianisation de l’Empire à partir du IVe siècle. Il est ensuite primordial de définir clairement la théurgie, ce que les chercheurs n’ont pas fait jusqu’à maintenant, en tant qu’opération rituelle par laquelle un réceptacle matériel est animé par le divin. Puis, nous démontrons que, bien que le terme « théurgie » soit tardif, celui-ci trouve néanmoins ses racines dans la longue tradition platonicienne, de Platon lui-même jusqu’à Proclus, en passant notamment par Plotin, Porphyre et Jamblique. À la suite du volet historique et après avoir présenté une définition claire de la notion de théurgie, il est important de préciser son statut au sein de la philosophie de Proclus, notamment en nous intéressant au passage-clef TP, I, 25 dans lequel le néoplatonicien présente la théurgie comme étant supérieure (κρείττων) à la philosophie. Nous nous intéressons ensuite à deux rites théurgiques concrets présentés dans l’œuvre proclienne en les analysant en profondeur : le rite de l’ensevelissement du corps (TP, IV, 9) et le rite de l’immortalisation d’Achille (In Remp., I, 152-152). Après avoir exposé le lien intrinsèque de la théurgie avec la mystagogie, notamment autour de l’importance du silence (σιγή) mystique, nous développons sur les implications de la théurgie pour le système philosophique de Proclus. Nous constatons que ces implications sont monumentales et touchent une multitude d’aspects de sa pensée : le statut de l’âme, celui de la matière, l’ontologie, la primauté du véhicule (ὄχημα) de l’âme, la notion d’imagination (φαντασία), l’importance des symboles (σύμβολα et συνθήματα) et le rôle de l’amour (ἔρως). Nous terminons finalement la recherche en présentant l’héritage de Proclus, principalement à travers l’œuvre du néoplatonicien chrétien Pseudo-Denys. / This thesis has for goal to present in detail the importance of theurgy in the philosophy of Proclus, as well as his link with mystagogy. One of the first objectives is to describe the causes of the emergence of theurgy during the late Antiquity. So, we present the historical setting from where emerges the notion of theurgy in the context of the process of Christianisation of the Empire starting during the 4th century. It is after that primordial to propose a clear definition of theurgy, something that the researchers haven’t done yet, as the ritual operation by which a material receptacle is animated by the divine. Then, we demonstrate that, even if the term “theurgy” is late, it finds however his roots in the long platonic tradition, from Plato to Proclus, passing by Plotinus, Porphyry, and Iamblichus. Following the historical aspect and after having clearly define the notion of theurgy, it is important to explain the status of theurgy in the philosophy of Proclus, especially by analyzing the crucial passage in TP, I, 25, where the Neoplatonist declares that theurgy is superior (κρείττων) to philosophy. Moreover, we examine two concrete theurgical rites presented in the Proclus’ works: the burial of the body (TP, IV, 9) and the immortalisation of Achille (In Remp., I, 152-152). After having exposed the intrinsically relation between theurgy and mystagogy, notably with the mystical silence (σιγή), we develop the implications of theurgy in the vast philosophical system of Proclus. These implications are monumental and touch many aspects: the status of the soul, the one of the matter, the ontology, the primacy of the soul’s vehicle (ὄχημα), the notion of imagination (φαντασία), the importance of symbols (σύμβολα et συνθήματα) and the role of love (ἔρως). We finally end this research by presenting the legacy of Proclus, especially through the work of the Christian Neoplatonist Pseudo-Dionysius.