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Ryan Haecker


I have been awarded a 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 of Alexandria, 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

  • Leuven Encounters in Systematic Theology XII, October 2019 - Two Swords, One Person: Trinitarian Ontology and Post-Liberal Political Theology (Catholic University of Leuven) (TBC) 
  • Beierwaltes Seminar VI, The Cambridge Centre for the Study of Platonism, October 2019 - Subject-Oriented-Ontology: The Springs of Subjectivity in Patristic Theology (University of Cambridge) (TBC)
  • International Conference on Patristic Studies XVIII, August 2019 - Triadic Circles: On The Trinity as the Systematic Structure of Origen's On First Principles (University of Oxford)
  • Beierwaltes Seminar V, The Cambridge Centre for the Study of Platonism, July 2019 - One and Event: Set Theory in Plato, Cantor, and Badiou (University of Cambridge) (TBC)
  • Logic and Modernity, Hegel’s Science of Logic as Paradigm of Modern subjectivity, June 2019 - Augustine, Hegel, and the Springs of Subjectivity (Friedrich-Schiller Universität Jena) (TBC)
  • Tyndale Fellowship Conference, June 2019 - God in the Machine: Theological Mechanics and Artificial Intelligence (University of Cambridge) (TBC)
  • Centre for Catholic Studies (CCS), Early Career Conference, June 2019 - Star of the Sea: A Magnificat for Marian Feminism (University of Durham) (TBC)
  • Examining Hegel’s Idea of Self-Determination, June 2019 - Hegel's Speculative Syllogism: A Contribution to the Theology of Logic (University of Warwick)
  • 20th-Century French Reception of Hegel, May 2019 - The Slaughter-Bench of Logic: Georges Bataille's General Economy of the Hegelian Dialectic (University of Cambridge)
  • German History Research Group, May 2019 - Shadows of the Postmodern in Schelling's Critique of Hegel (University of Cambridge)
  • Philiminality Cambridge, April 2019 - Essence Before Existence: A Critique of Hegel's Critics (University of Cambridge)
  • European Academy of Religio (EAR), March 2019 - The Logic of the Logos: A New Theology of Logic (Bologna, Italy)
  • European Academy of Religio (EAR), March 2019 - Sacramental Engines: Theological Mechanics in Digital Computers (Bologna, Italy) 
  • European Academy of Religion (EAR), March 2019 - The Light of the Leaf: Theological Botany in Timothy Morton's Object-Oriented Ecology (Bologna, Italy) 
  • European Academy of Religion (EAR), March 2019 - Ancient Antecedents of the Theological Turn in French Phenomenology (Bologna, Italy) 
  • German Graduate Research Seminar, February 2019 - The Urpflanze of Life: Goethe's Metamorphosis of Plants (University of Cambridge) 
  • Philiminality Cambridge, January 2019 - From Transcendentals to Transcendentalism: A Theological Intervention (University of Cambridge)
  • Colloquium Adamantianum, January 2019 - Ramelli on the Birth of the Trinitarian Meaning of Hypostasis II: A Philosophical Reflection (University of Cambridge)
  • Monarchy and Modernity Since 1500, January 2019 - Monarchism After Modernity: Bataille's Political Theology of the Gift (University of Cambridge)
  • Sisters in Arms, Reinventing the Bond Between Philosophy and Theology after the 'Empirical Turn', January 2019 - Who Can We Crown 'Queen of the Sciences'? Reconsidering Quine's 'Naturalized Epistemology' (University of Cambridge)
  • Peterhouse Graduate Symposium, November 2018 - The Light of the Leaf: A New Theology of the Plant (University of Cambridge)
  • World Metaphysics Conference, October 2018 - The Logic of the Logos: A New Theology of Logic (Pontifical University of Salamanca)
  • Beierwaltes Seminar IV, The Cambridge Centre for the Study of Platonism, October 2018 - Origen Against Logocentrism: Derrida, Dialectic, and Difference (University of Cambridge)
  • Cambridge Festival of Ideas, October 2018 - 'What Have the Angels Ever Done For Us?' A Public Forum (University of Cambridge)
  • Presences: Modalities, Stimmung, Intensity, September 2018 - What do Angels Sing? Recent Reflections on the Harmonia Mundi (University of Cambridge)
  • Tolkien Society, Oxonmoot 2018, September 2018 - On the Providential Historicism of Middle-earth (University of Oxford)
  • Institute For Orthodox Christian Studies (IOCS), The Newness of the Old, August 2018 - Origen's Trinitarian Traditionalism: Ressourcement in Response to Lyotard (University of Cambridge)
  • Beierwaltes Seminar III, The Cambridge Centre for the Study of Platonism, July 2018 - Origen Against Ontotheology: Heidegger, Marion, and Exodus 3:14 (University of Cambridge)
  • 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 (SST), April 2018 – 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)
  • 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, Gnosticism, Plotinus, Proclus, Origen, Augustine, Patristics, Dionysius, Eriugena, Medieval Scholasticism, Aquinas, Scotus, Ockham, Cusa, German Idealism, Kant, Fichte, Schelling, Hegel, Marx, Frege, Heidegger, Quine, Bataille, Derrida, Lyotard, Baudrillard, Badiou, Meillasoux, 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, Ecology, Botany, Mechanics, Artificial Intelligence, Semiotics, Hermeneutics, Phenomenology, Mariology, Angelology, Analogy, Participation, Paradox, Contradiction, Dialetheism, and Dialectic.


Other Professional Activities

I am a reviewer for Reviews of Religion and Theology.  I am a committee member of the interdisciplinary philosophy society Philiminality Cambridge.  I collaborated with Prof. Robin Kirkpatrick to plan the public forum on angelology, What have the Angels Ever Done for Us?, for the Cambridge Festival of Ideas.  I have also collaborated to prepare conferences on Monarchy in Modernity, the 20th-Century reception of French Hegel, and a future international conference on New Trinitarian Ontologies.  I co-host two reading groups on Nicolas of Cusa and G.W.F. Hegel at Peterhouse Cambridge.  I regularly contribute to the Whichcote Society, Quaero Cambridge theological apologetics, the Fisher House Apologia series, and the Aesthetics and Politics Reading Group on Critical Theory, as well as to Plotinus, Eriugena, and Schelling and Hegel reading groups, which are hosted by Prof. Douglas Hedley and the Cambridge Centre for the Study of Platonism.  And I have also previously hosted the Dionysius of Areopagite Reading Group for the study of the theological semiotics, ecclesio-politics, and speculative angelology.


  • New Trinitarian Ontologies, Principal Conference Planner, September 2019 (University of Cambridge)
  • The French Reception of Hegel 1933 to 1952, Principal Conference Planner, May 2019 (University of Cambridge)
  • Monarchy and Modernity, 1500-1945, Conference Planner, January 2019 (University of Cambridge)


Honours and Awards

  • Cambridge Centre for the Study of Platonism, Minor Conference Grant 2019
  • Mind Association, Minor Conference Grant 2019
  • Cambridge Faculty of Divinity Trust Fund, Major Conference Grant 2019
  • Relational Ontology Research, Pontifical University of the Holy Cross, Major Conference Grant 2019
  • Study Centre St. Nicholas for the Eastern Churches, University of Fribourg, Major Conference Grant 2019
  • Peterhouse Cambridge Greta Burkill Fund for Graduates 2017-2020
  • Peterhouse Cambridge Research Studentship, 2017-2020
  • University of Nottingham, Nominated for Sir Francis Hill Scholarship, 2016
  • University of Texas Deans List, 2008-2009
  • Phi Alpha Theta National History Honors Society 2009
  • Texas State University Dean's List, 2006-2007
  • Texas State University Mitte Honors Program, 2007

Other Presentations

  • Theology in the Anthropocene, March 2019 - Donna Haraway on Cyborg Capitalism and Our Environmental Future (University of Cambridge)
  • Plotinus Reading Group, October 2018 - On the Order of Providence in Plotinus' Enneads III.2.8. (University of Cambridge)
  • Medieval Philosophy Reading Group, October 2018 - Duns Scotus on Divine Knowledge of Future Contingents in the Lectures on Peter the Lombard's Sentences (University of Cambridge)
  • Young Austin Professional Philosophy Association, June 2018 – Derrida-Searle Debate on Deconstruction and Ordinary Language  (Austin, Texas)
  • Tolkien Society Seminar 2018, June 2018 - On the Providential Historicism of Middle-earth (Leeds, England)
  • Hegel Reading Group, February 2018 – Introduction to the Concept in Hegel's The Science of Logic (University of Cambridge)
  • Eriugena Reading Group, January 2018 – The Five Modes of Negation in the Periphyseon (University of Cambridge)
  • Young Austin Professional Philosophy Association, January 2018 – The Political Theology of Climate Change (Austin, Texas)
  • Hegel Reading Group, November 2017 – Dialectic in Hegel's Phenomenology of Spirit (University of Cambridge)
  • 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


  • Nous, Logos, and Dialectic in Origen of Alexandria [Human and Divine Nous from Ancient to Byzantine and Renaissance Philosophy and Religion: Key Themes, Intersections, and Developments, Ilaria Ramelli ed., Brill, 2020] (In Progress) 
  • On the First Principles of Origen's Logic [Conference Proceedings of Origen and the Origenian Tradition on Progress, Early Christianity in the Context of Antiquity (ECCA), Peter Lang Publishing, 2019] (Forthcoming)
  • Review of Philip John Paul Gonzales, Reimagining the Analogia Entis: The Future of Erich Przywara's Christian Vision [Reviews in Religion and Theology, Vol.26, Issue 2, March 2019] (In Progress)
  • The Logic of the Logos: A New Theology of Logic [Seventh World Conference on Metaphysics, Conference Proceedings 2018] (Forthcoming)
  • Review of Robert Somos, Logic and Argumentation in Origen [Reviews in Religion and Theology, Vol.26, Issue 1, January 2019]  
  • On the Providential Historicism of Middle-earth [Tolkien Society Seminar, Conference Proceedings, Luna Press Publishing, 2018]
  • 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, Easter Term 2018]
  • 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)
  • New Trinitarian Ontologies (In Progress)
  • Restoring Reason: Origen's Trinitarian Logic (In Progress)

Other Publications

  • Sacramental Engines: On the First Principles of Theological Mechanics (In Progress)
  • What do Angels Sing? Recent Reflections on the Pythagorean Harmonia Mundi [Faculty of Divinity Pamphlet] (Forthcoming)
  • Origen Against Deconstruction: A Postmodern Patristic Apologia (In Progress)
  • Traces of the Trinity in Plato's Parmenides (In Progress)
  • 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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