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155Lux mentiumInternational Philosophical Quarterly 64 (2): 93-110. 2024.The classic “retorsion” argument that any claim that all thought is relative is a self-refuting dialectical contradiction not only decisively refutes relativism but also demonstrates the presence of absolute truth in all thinking as its implicit enabling condition. In Augustine’s version, this takes the form of showing that truth itself, which Augustine identifies as God, is the “light of minds,” found within the soul by thought’s self-reflexive discovery of the ever-present condition for its ow…Read more
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55Plotinus, Ennead II.4, On Matter: Translation with an Introduction and Commentary, written by A.A. LongInternational Journal of the Platonic Tradition 18 (2): 254-257. 2024.
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68Maximus ConfessorIn Jorge J. E. Gracia & Timothy B. Noone (eds.), A Companion to Philosophy in the Middle Ages, Wiley-blackwell. 2005.
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80Pseudo‐DionysiusIn Jorge J. E. Gracia & Timothy B. Noone (eds.), A Companion to Philosophy in the Middle Ages, Wiley-blackwell. 2005.This chapter contains sections titled: God beyond being Creation as theophany Goodness, beauty, and love Evil Hierarchy Knowledge Symbolism Christological consummation.
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152The Living ImageProceedings of the American Catholic Philosophical Association 69 191-204. 1995.
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68Platonic interpretations: selected papers from the sixteenth annual conference of the International Society for Neoplatonic Studies (edited book)The Prometheus Trust, in association with the International Society for Neoplatonic Studies. 2019.
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111Lessened by Addition: Procession by Diminution in Proclus and AquinasReview of Metaphysics 72 (4): 685-716. 2019.
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1The Augustinian Tradition (review)Review of Metaphysics 54 (1): 162-162. 2000.St. Augustine’s tremendous influence on Western thought continues to provide scholars from all fields with fresh insights and new connections to the philosophical and theological questions posed by modernity. The twenty essays collected here attempt not only to discuss perennial problems as found in Augustine—human willing, the nature of time, sin and free will, the soul’s relationship to the body—but also bring Augustine’s mind to bear on many post-Patristic concerns such as the alliance betwee…Read more
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143PlotinusReview of Metaphysics 50 (2): 399-399. 1996.This is an unusual book in that it is neither a synthetic presentation of Plotinus' thought nor an examination of a particular topic in Plotinus. It is rather, as the series title indicates, a study of Plotinus's arguments on a wide range of issues. For this reason, it would make exceptionally difficult reading for anyone who is not already familiar with Plotinus's philosophy.
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7Methexis: Creation, Incarnation, Deification in Saint Maximus ConfessorDissertation, Yale University. 1991.The dissertation examines Maximus' doctrine of participation philosophically as the solution to the metaphysical problem of the One and the many, the relation between the world and its ground. The theory is briefly studied in Parmenides, Plato, and Plotinus, and at greater length in Proclus. It culminates in Pseudo-Dionysius' antinomic doctrine of participation as total identity and difference between God and the world , and of creation as the self-impartation and self-creation of God and the de…Read more
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233The Presence of the Paradigm: Immanence and Transcendence In Plato’s Theory of FormsReview of Metaphysics 53 (2). 1999.DISCUSSIONS OF THE ONTOLOGICAL STATUS of Plato’s forms too often take for granted that immanence and transcendence are opposed to each other: if the forms are in instances then they are not separate from them, while if the forms are separate then they are not in instances. This assumption is sometimes associated with the theory that there is a change in Plato’s thought between the early or Socratic dialogues, in which forms are regarded as immanent, and the middle dialogues and Timaeus, in which…Read more
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65The EnneadsReview of Metaphysics 48 (3): 675-677. 1995.In addition to the complete Enneads and Porphyry's Life of Plotinus, this republication of the fourth edition of MacKenna's Plotinus includes a brief foreword from the publisher, extracts from MacKenna's "Explanatory Matter in the First Edition", and two appendices: an essay titled "A Suggestive Outline of Plotinian Metaphysics," and a concor dance of the chronological and systematic orders of Plotinus' works. It also provides, at the conclusion of each treatise, selected brief passages in other…Read more
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242The Good of the IntellectProceedings of the American Catholic Philosophical Association 83 25-39. 2009.Recent continental philosophy often seeks to retrieve Neoplatonic transcendence, or the Good, while ignoring the place of intellect in classical and medieval Neoplatonism. Instead, it attempts to articulate an encounter with radical transcendence in the immediacy of temporality, individuality, and affectivity.On the assumption that there is no intellectual intuition (Kant), intellectual consciousness is reduced to ratiocination and is taken to be “poor in intuition” (Marion). In this context, th…Read more
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69The Structure of Being and the Search for the Good: Essays on Ancient and Early Medieval PlatonismReview of Metaphysics 54 (1): 163-164. 2000.This collection of reprints contains twenty-four articles, whose original publication dates range from 1974 to 1997. It includes four essays on various themes in Plato and Aristotle, nine on Plotinus, six on later Greek Neoplatonism, and five on Eriugena. Fifteen are in English and nine are in French.
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103Colloquium 1: The Togetherness of Thought and Being: A Phenomenological Reading of Plotinus’ Doctrine “That the Intelligibles are Not Outside the Intellect”Proceedings of the Boston Area Colloquium of Ancient Philosophy 22 (1): 1-40. 2007.
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52Theophany: The Neoplatonic Philosophy of Dionysius the AreopagiteState University of New York Press. 2007.Situates Pseudo-Dionysius the Areopagite as a Neoplatonic philosopher in the tradition of Plotinus and Proclus
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83In Thinking Being , Perl articulates central arguments and ideas regarding the nature of reality in Parmenides, Plato, Aristotle, Plotinus, and Thomas Aquinas, thematizing the indissoluble togetherness of thought and being, and focusing on continuity rather than opposition within this tradition
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178Hierarchy and Participation in Dionysius the Areopagite and Greek NeoplatonismAmerican Catholic Philosophical Quarterly 68 (1): 15-30. 1994.
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173The Motion of Intellect On the Neoplatonic Reading of Sophist 248e-249dInternational Journal of the Platonic Tradition 8 (2): 135-160. 2014.This paper defends Plotinus’ reading of Sophist 248e-249d as an expression of the togetherness or unity-in-duality of intellect and intelligible being. Throughout the dialogues Plato consistently presents knowledge as a togetherness of knower and known, expressing this through the myth of recollection and through metaphors of grasping, eating, and sexual union. He indicates that an intelligible paradigm is in the thought that apprehends it, and regularly regards the forms not as extrinsic “objec…Read more
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Areas of Specialization
| Ancient Greek and Roman Philosophy |
| Medieval and Renaissance Philosophy |