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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 Lord Professor Rowan Williams.  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

Professional Presentations

  • Monarchy and Modernity Since 1500, January 2019 - Monarchism After Modernity: Towards a Political Theology of the Gift (University of Cambridge)
  • Beierwaltes Seminar on Origen and Christian Platonism, October 2018 - Origen Against Logocentrism: Derrida, Dialectic, and Difference (University of Cambridge)
  • Presences: Modalities, Stimmung, Intensity, September 2018 - What do Angels Sing? Recent Reflections on the Harmonia Mundi (University of Cambridge)
  • The Tolkien Society Oxonmoot 2018, September 2018 - On the Providential Historicism of Middle-earth (University of Oxford) 
  • Peterhouse Graduate Symposium, Fall 2018 - The Light of the Leaf: A New Theology of the Plant (University of Cambridge)
  • IOCS The Newness of the Old, August 2018 - Origen's Trinitarian Traditionalism: Ressourcement in Response to Lyotard (University of Cambridge)
  • Beierwaltes Seminar on Origen and Christian Platonism, July 2018 - Origen Against Ontotheology: Heidegger, Marion, and Exodus 3:14 (University of Cambridge)
  • The Tolkien Society Seminar, July 2018 - On the Providential Historicism of Middle-earth (Leeds, England)
  • Colloquium Adamantium, June 2018 - Dialectic in Origen's Christology: An Examination of Jacobsen's Teacher of Salvation (University of Cambridge)
  • Examining Hegel's Idea of Essence, May 2018 - Opposing Otherness: A Hegelian Counter-Critique of Desmond’s Metaxological Critique of Dialectic (University of Warwick)
  • Origen and the Origenian Tradition on Progress, May 2018 - On the First Principles of Origen's Logic (Sapienza University of Rome)
  • Theological Tropes in Contemporary Culture, May 2018 - Comics, Capitalism, and Christ (University of Oxford)
  • Noesis Seminar, April 2018 - Analogy and Dialectic in Plato (University of Cambridge)
  • Society for the Study of Theology, April 2018 Conference – The Monster in the Monstrance: The Paradox of Speculative Materialism in the Alien Film Series (University of Nottingham)
  • Peterhouse Graduate Symposium, February 2018 – Origen’s Angel of History (University of Cambridge)
  • Eriugena Reading Group, January 2018 – The Five Modes of Negation in the Periphyseon (University of Cambridge)
  • Hegel Reading Group, February 2018 – Introduction to the Concept in Hegel's The Science of Logic (University of Cambridge)
  • Hegel Reading Group, November 2017 – Dialectic in Hegel's Phenomenology of Spirit (University of Cambridge)
  • Silence(s) Study Day, November 2017 – The One that is Not: The Logic of Silence in Plato’s Parmenides (University of Cambridge)
  • Centre for the Study of Platonism, November 2017 – On Origen's Speculative Angelology (University of Cambridge)
  • Peterhouse Graduate Symposium, November 2017 – Origen’s Trinitarian Logic (University of Cambridge)
  • Centre for Catholic Studies, April 2016 – A Short Theological History of Infinity (University of Durham)
  • Postgraduate Presentation, February 2016 – Is Thomism Radical Enough? A Reply to Alan Darley (University of Nottingham)

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, Stoicism, 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, Derrida, 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, Political Theology and Political Philosophy, the Philosophy and History of Logic, the Philosophy and Foundations of Mathematics, Metaphysics and Ontology, Virtue Ethics, Aesthetics, Musicology, Botany, Semiotics, Hermeneutics, Phenomenology, Angelology, Analogy, Participation, Paradox, Contradiction, Dialetheism, and Dialectic.


  • Supervisor, C11: God, Truth, and Metaphysics, Faculty of Divinity, University of Cambridge, 2018 - Present

Other Professional Activities

I am a committee member of the interdisciplinary philosophy society Philiminality Cambridge. I am collaborating on a public forum on angelology, titled 'What have the Angels Ever Done for Us?', for the forthcoming Cambridge Festival of Ideas.  I am also collaborating to prepare conferences on Monarchy in Modernity, the 20th-Century reception of French Hegel, and an international conference on New Trinitarian Ontologies.  I co-host a reading group on Nicolas of Cusa at Peterhouse Cambridge.  I have also previously hosted the Dionysius of Areopagite Reading Group for the study of the theological semiotics, ecclesio-politics, and speculative angelology.

Other Presentations

  • Philiminality Cambridge, November 2018 - The Standing of Essence (University of Cambridge)
  • Cambridge Festival of Ideas, September 2018 -  'What have the Angels Ever Done for Us?' A Public Forum (University of Cambridge)
  • Young Austin Professional Philosophy Association, June 2018 – Derrida-Searle Debate on Deconstruction and Ordinary Language  (Austin, Texas)
  • Young Austin Professional Philosophy Association, January 2018 – The Political Theology of Climate Change (Austin, Texas)
  • Jefferson Book Club, Summer 2017 – Summer Reading Group on Ancient Political Philosophy (University of Texas)
  • Undergraduate Philosophy Association, April 2015 – Plato, Logic, and Ontology (University of Texas)
  • Theravada Buddhism and Catholic Christianity, March 2015 – Public Discussion (University of Texas)
  • Guest Lecture, February 2014 - The Roots of Chinese Medicine (Texas Health and Science University)
  • Lecture Series, July to August 2013  - Oriental History in Three Acts (Texas Health and Science University )
  • Third Annual Philosophy Conference, March 2013 - The Historicism and Providence of Middle-Earth (Houston Baptist University)
  • Anscombe Society, March 2012 - Philosophy of Nature and Natural Law (University of Texas)
  • Jefferson Book Club, April 2012 - Edward Gibbons and the History of the Decline and Fall of the Roman Empire (University of Texas)
  • Phi Alpha Theta National History Honors Society, May 2009 - Schumpeter Imperialism (University of Texas)
  • Undergraduate History Society, February 2009 - The Philosophy of History of Hegel (University of Texas)
  • Undergraduate Philosophy Association, September 2008 - Just War Theory (University of Texas)

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.]


  • Analogy and Dialectic: A Genealogy of the Trinity (In Progress)

Other Publications

  • On Miracles: An Essay Against the Principle of Sufficient Reason
  • Opposing Otherness: A Hegelian Counter-Critique of Desmond’s Metaxological Critique of Dialectic
  • Comics, Capitalism, and Christ: A Posterior Evangelium
  • The Monster in the Monstrance: The Paradox of Speculative Materialism in the Alien Film Series
  • On Origen's Speculative Angelology
  • 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
  • A Short Theological History of Infinity
  • 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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