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Ryan Haecker


I have been awarded the Peterhouse Graduate Research Studentship to study for a Doctor of Philosophy in Theology and Religious Studies under the supervision of Professor Lord Rowan Williams of Oystermouth.  My doctoral dissertation, tentatively titled 'Restoring Reason: Origen's Trinitarian Logic', should show, through a deep and creative reading of Origen, how logic is ontological, ontology is theological, and theology is trinitarian.

I have previously studied history, philosophy, and theology at the University of Texas, the University Würzburg, and the University of Nottingham.  I have written a genealogy of the analogy of being and dialectical logic from Plato and Aristotle, through Aquinas and Ockham, to Hegel and Przywara.  I wish to write a future monograph, tentatively titled 'Analogy and Dialectic: A Genealogy of the Trinity', to explore the philosophical, systematic, and historical intersections of analogy and dialectic in trinitarian theology.  My research examines the intersections of ancient Platonism, medieval Scholasticism, and modern Idealism for modern theology.

I am currently working on an interdisciplinary research project, between historical and systematic theology, focusing on the reception of Stoic logic and Platonic ontology in the early Patristic trinitarian theology of Origen of Alexandria.  I wish to argue that Origen's trinitarian theology contains a trinitarian logic.  I hope to help inaugurate a new field of research in the theology of logic for the development of a future trinitarian ontology.

Area of Interest

  • Trinitarian Theology
  • Philosophy of Logic
  • Patristics
  • Platonism
  • German Idealism
  • Systematic Theology


  • IOCS Cambridge University The Newness of the Old - Origen's Trinitarian Traditionalism: Ressourcement in Response to Lyotard 
  • The Tolkien Society Seminar 2018 - On the Providential Historicism of Middle-earth
  • Cambridge University Colloquium Adamantium - Dialectic in Origen's Christology: An Examination of Jacobsen's Teacher of Salvation
  • Examining Hegel's Idea of Essence - Opposing Otherness: A Hegelian Counter-Critique of Desmond’s Metaxological Critique of Dialectic 
  • Sapienza University Origen and the Origenian Tradition on Progress - On the First Principles of Origen's Logic
  • Oxford University Theological Tropes in Contemporary Culture - Comics, Capitalism, and Christ
  • Cambridge University Noesis Easter 2018 Seminar - Analogy and Dialectic in Plato
  • Society for the Study of Theology 2018 Conference – The Monster in the Monstrance: The Paradox of Speculative Materialism in the Alien Film Series
  • Peterhouse Cambridge Symposium Lent 2017 – Origen’s Angel of History
  • Cambridge Eriugena Reading Group – The Five Modes of Negation in the Periphyseon
  • Cambridge University Hegel Reading Group – Introduction to the Concept the Science of Logic
  • Cambridge University Hegel Reading Group – Dialectic in the Phenomenology of Spirit
  • Young Austin Professional Philosophy Association – The Political Theology of Climate Change
  • Silence(s) Study Day – The One that is Not: The Logic of Silence in Plato’s Parmenides
  • Cambridge University Centre for the Study of Platonism – On Origen's Speculative Angelology
  • Peterhouse Cambridge Symposium Michelmas 2017 – Origen’s Trinitarian Logic
  • Jefferson Book Club – Summer Reading Group on Ancient Political Philosophy
  • Durham University Centre for Catholic Studies  – A Short Theological History of Infinity
  • Postgraduate Presentation – Is Thomism Radical Enough? A Reply to Alan Darley
  • Undergraduate Philosophy Association – Plato, Logic, and Ontology
  • Theravada Buddhism and Catholic Christianity – Public Discussion
  • Texas Health and Science University Lecture - The Roots of Chinese Medicine
  • Texas Health and Science University Lecture Series - Oriental History in Three Acts
  • Houston Baptist University Philosophy Conference - The Historicism and Providence of Middle-Earth
  • UT Anscombe Society - Philosophy of Nature and Natural Law
  • Jefferson Book Club - Edward Gibbons and the History of the Decline and Fall of the Roman Empire
  • Phi Alpha Theta National History Honors Society - Schumpeter Imperialism
  • Undergraduate Philosophy Association - Just War Theory
  • Undergraduate History Society - The Philosophy of History of Hegel

Subject area and speciality

Philosophy of Religion specialists:

Origen's Trinitarian Logic: philosophy of logic in light of Origen of Alexandria's trinitarian theology

Research Interests

Trinitarian Theology, Philosophical Theology, Systematic Theology, Pythagoreanism, Platonism, Aristotelianism, Plotinus, Proclus, Origen, Augustine, Patristics, Dionysius, Eriugena, Medieval Scholasticism, Thomas Aquinas, Duns Scotus, William of Ockham, Nicholas of Cusa, German Idealism, Kant, Fichte, Schelling, Hegel, Heidegger, Przywara, Intellectual History of Europe and the History of Western Philosophy, the History and Philosophy of Western Antiquity and East Asia, World History, the Philosophy of History and Historiography, Political Theology and Political Philosophy, the Philosophy and History of Logic, the Philosophy and Foundations of Mathematics, Metaphysics and Ontology, Virtue Ethics, Aesthetics, Semiotics, Hermeneutics, Phenomenology, Angelology, Analogy, Participation, Paradox, Contradiction, Dialetheism, and Dialectic.

Other Professional Activities

I host the Dionysius of Areopagite Reading Group at Peterhouse Cambridge for the study of the divine names and theological semiotics


Key Publications

  • A Plastic Possibility for Ralph Cudworth’s Libertarianism: A Reply to Christian Hengstermann [Adamantiana Conference Volume “Origen’s Philosophy of Freedom in 17th-Century England”] (Forthcoming)
  • The One that is Not: The Logic of Silence in Plato’s Parmenides [Noesis Review, Issue 5, 2018] (Forthcoming)
  • Review of Roger Scruton, On Human Nature [Politics & Poetics: A Journal for Humane Philosophy, Volume III; The Human Difference]
  • Review of Geoffrey Holsclaw, Transcending Subjects: Augustine, Hegel, and Theology [Hegel Bulletin of the Hegel Society of Great Britain. Cambridge University Press, 2017]
  • Is Thomism Radical Enough? A Reply to Alan Darley [Theofilos vol. 8 no. 1 (2016): 16-28.]


Other Publications

  • Unloosing Upwards: On the Paradox of Analysis in the Theology of Logic
  • Plato's Positive Dialectic: Hegel Reads Plato's Parmenides, Sophist, and Philebus
  • A Case for Contradictions in the Trinity: A Neoplatonic Metaphysics of Relative Identity
  • The Gothic Analogy of Being: An Investigation of the Sublime and the Infinite
  • Plato Against Phenomenology: A Genealogical Critique
  • Dialectical Analogy and Analogical Dialectics: Przywara and Hegel on the Analogy of Being
  • In Defense of Plato on Mathematical Ideas: A Commentary on Aristotle’s Metaphysics XIII 6-8
  • Plato’s Contest: Answering the Challenge of the Parmenides


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