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.

Evangelicalism in western Canada was fuelled by fundamentalist theology and devotion which evolved in this region during the early twentieth century. Generally, Canadian evangelical theologians have focused on the historical and theological implications of evangelicalism within this area. Due to the nature of evangelical theology, which is governed by reason and the defense of truth and dogma, this Christian movement in the west ignored by default concepts connected to mystical theology. This thesis researches a question which has not had an adequate response within evangelical theological tradition, primarily as a result of its disregard for mystical theology. The issue of concern in this thesis is the nature of the process of sanctification of the soul, and particularly, the purpose of the silence of God during this time. Questions to be addressed are: `what is the nature of spiritual transformation?', `what transpires in the soul of the person?' and `what is the role of the `dark night' and the `silence of God' during this experience?' This research responds with an explanation to the underlying cause for the inability of evangelical spirituality in the Canadian west to respond to this issue. It also provides a plausible resolution to the problem which is embedded in the literature of John of the Cross, a sixteenth century Spanish mystic. / CHR SPIRIT, CHURCHIST, MISS / DTH (CHR SPIRIT)

The present thesis examines the way in which two twelfth century authors, the Cistercian monks, Bernard of Clairvaux (1091-1153) and William of St. Thierry (c. 1080-1148), used Augustine (354-430) in the articulation of their mystical thought. The approach to this subject takes into account the fact that in the works of all these medieval authors the “mystical” element is inescapably entangled with their theological discourse and that an accurate understanding of their views on the soul’s direct encounter with God cannot be achieved without a discussion of their theology. This thesis posits that the cohesion of Bernard’s and William’s mystical thought lies in their appropriation of the guiding principle of Augustine’s mystical theology: “You made us for yourself and our heart is restless until it rests in you” (conf. 1.1.1), reflected in the subtle interplay of three main themes, namely (1) the creation of humanity in the image and likeness of God, which provides the grounds for the understanding of the soul’s search for direct contact with God; (2) love as a longing innate in every human being, which explores the means to attain immediacy with God; and (3) the soul’s direct encounter with God, which discusses the nature of the soul’s immediate experience of the divine presence that can only be achieved in lasting fullness at the end of time. This examination of Bernard’s and William’s use of Augustine is structured on the basis of these three core themes which form the scaffolding of their mystical thought. Investigating the specific methods of their reception of Augustine will highlight the originality and uniqueness of each of the two Cistercian authors, who while drawing on the same patristic source use it nevertheless in various ways, by focussing on different aspects of Augustine’s immense oeuvre and by arriving at distinct mystical programmes.