Pseudo-Dionysius and the Metaphysics of Aquinas, Leiden: Brill, 1992, pp. 316.

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Reprint, Pseudo-Dionysius and the Metaphysics of Aquinas, Notre Dame University Press, 2005.

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Allwisest Stagyrite. Joyce’s Quotations from Aristotle. Dublin: National Library of Ireland, 2005, pp. 59.

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Aristotelian Interpretations. Dublin: Irish Academic Press, 2016, 366 pages. 

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Ερμηνεύοντας τον Αριστοτέλη. Athens: Ινστιτούτο του Βιβλίου, Καρδαμίτσα, 2019, pp. 282 [Translation of Aristotelian Interpretations].

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James Joyce, Aristotle, and Aquinas. University of Florida Press, 2022, pp. 314.

At the Heart of the Real. Philosophical Essays in Honour of the Most Reverend Desmond Connell, Archbishop of Dublin, Dublin: Irish Academic Press, 1992, pp. 447.

Human Destinies. Philosophical Essays in Memory of Gerald Hanratty, Notre Dame University Press, 2012, pp. 678.

What Happened in and to Moral Philosophy in the Twentieth Century? (Proceedings of conference in honour of Alasdair MacIntyre, Dublin, March 2009), Notre Dame University Press, 2013, pp. 499.

Studies on Plato, Aristotle and Proclus. Collected Essays on Ancient Philosophy of John J. Cleary, eds. John Dillon, Brendan O’Byrne, Fran O’Rourke. Leiden: Brill, 2013, pp. 638.

Voices on Joyce, co-edited with Anne Fogarty, University College Dublin Press, 2015, pp. 346.

Ciphers of Transcendence. Essays in Philosophy of Religion in Honour of Patrick Masterson, Newbridge: Irish Academic Press, 2019, pp. 415.

“The Gift of Being: Aquinas and Heidegger”, At the Heart of the Real. Philosophical Essays in Honour of the Most Reverend Desmond Connell, Archbishop of Dublin, Dublin: Irish Academic Press, 1992, pp. 309 – 338.

“Being and Non-Being in Pseudo-Dionysius”, The Relationship between Neoplatonism and Christianity, eds Thomas Finan & Vincent Twomey, Dublin: Four Courts, 1992, pp. 55 – 78.

“Via causalitatis; via negationis; via eminentiae”, Historisches Wörterbuch der Philosophie, Band 11 [U-V] (Basel: Schwabe Verlag) 2001, Cols 1034 – 1038. [Commissioned article]

“Aquinas and Platonism”, Contemplating Aquinas, ed. Fergus Kerr, London: SCM Press, 2003, pp. 247 – 279.

“Wonder and Universality. Philosophy and Poetry in Aristotle” in On Aristotle’s Poetics and the Art of Rhetoric, Athens: Society for Aristotelian Studies “The Lyceum”, (2003), pp. 241 – 263.

“Jacques Maritain and the Metaphysics of Plato”, Approaches to Metaphysics, ed. William Sweet, Dordrecht: Kluwer, 2004, pp. 229 – 248.

“Unity in Aquinas’ Commentary on the Liber de Causis”, Pensées de l’Un dans l’histoire de la Philosophie. Études en hommage au professeur Werner Beierwaltes, eds Jean-Marc Narbonne, Alfons Reckermann, Paris: Vrin, 2004, pp. 230 – 271.

“Knowledge and Necessity in Aristotle” in Tyche-Ananke. Hasard et nécessité dans la philosophie grecque, Athens: Académie d’Athènes, (2005), pp. 155 – 171.

“Philosophy and Poetry in Aristotle. Interpreting and Imitating Nature” in Vita Contemplativa. Essays in Honour of Demetrios N. Koutras, Athens University, (2006), 385–404.

“Aristotle and the Metaphysics of Metaphor” in Proceedings of the Boston Area Colloquium in Ancient Philosophy, vol. 21, eds John J. Cleary & Gary M. Gurtler, Leiden: Brill (2005), pp. 155–177, 186–190.

“Beautiful Dangers of Being”, According to Your Word, ed. Liam Bergin, Dublin: Four Courts Press (2007), pp. 21 – 37.

“Joyce’s Thomist Masters”, Joyce in Context, ed. John McCourt, Cambridge University Press (2009) pp. 320–331.

“L’Anthropologie politique d’Aristote”. The Notion of Citizenship in Greek Philosophy, eds. E. Moutsopoulos and M. Protopapas-Marneli, Athens: Academy of Athens, 2011, pp. 113–141.

“Human Nature and Destiny According to Aristotle” in “Human Destinies. Philosophical Essays in Memory of Gerald Hanratty, Notre Dame University Press (2012), pp. 19–55.

“Aristotle’s Political Anthropology” in Politics of Practical Reasoning. Integrating Action, Discourse and Argument, eds Ricca Edmondson and Karlheinz Hülser, Lanham: Lexington (2012), pp. 17 – 38.

“Evolutionary Ethics. A Metaphysical Evaluation” in What Happened in and to Moral Philosophy in the Twentieth Century? (Proceedings of Alasdair MacIntyre conference, Dublin, March 2009), Notre Dame University Press, (2013). Pp. 323 – 357.

“Person and Spirit”, The Human Voyage of Self–discovery. Essays in Honour of Brendan Purcell, eds Brendan Leahy and David Walsh, Dublin: Veritas, 2013, pp. 125 – 137.

“James Joyce and Aristotle” in Voices on Joyce, Dublin: University College Dublin Press (2015), pp. 139 – 157.

“Names of God”, New Catholic Encyclopedia Supplement 2012-13: Ethics and Philosophy, vol. 3, ed. Robert L. Fastiggi,Detroit: Gale, 2013, pp. 1037 – 1039.

“Evil as Privation: The Neoplatonic Background to Aquinas’s De Malo” in Companion to Aquinas’s De Malo, ed. Michael Dougherty, Cambridge University Press (2016), pp. 192 – 221.

“Knowledge and Identity in Joyce” in Cognitive Joyce, eds Sylvain Belluc & Valérie Bénéjam, Palgrave Macmillan, 2018, pp. 31 – 50.

“Ciphers of Transcendence” in Ciphers of Transcendence. Essays in Philosophy of Religion in Honour of Patrick Masterson, Newbridge: Irish Academic Press, 2019, pp. 1 – 31, 39 – 43.

“Beauty from Plato to Aquinas”, in Ciphers of Transcendence. Essays in Philosophy of Religion in Honour of Patrick Masterson, Newbridge: Irish Academic Press, 2019, pp. 64 – 109.

“Aquinas’ Neoplatonist Aesthetics”, in Héritages platoniciens et aristotéliciens dans l’Orient et l’Occident (IIe-XVIe siècles), Wiesbaden: Reichert Verlag, 2021, pp. 179 – 191.

“Virtus Essendi: Intensive Being in Pseudo-Dionysius and Aquinas”, Dionysius 15 (1991), pp. 55 – 78 (Extracts from Pseudo-Dionysius and Aquinas).

“Plato’s Approach to Being in the Theaetetus and Sophist, and Heidegger’s Attribution of Aristotelian Influence”, Diotima 31 (2003), pp. 47 – 58

“Aristotle and the Metaphysics of Evolution”, The Review of Metaphysics 58, (2004) pp. 3–59.

“Ο Αριστοτότελης και η εξέλιξη των ειδών” Philosophia (Academy of Athens) 34 (2004), pp. 175 – 198. 

“Aristotele e la metafisica della metafora”, Logos (Naples) 2/3 (2008), pp. 29-49. 

“La métaphysiqe de la métaphore chez Aristote”. Diotima 39 (2009), pp. 128-154. 

“Aristóteles y la metafísica de la metáfora”, Convivium (Barcelona) 23 (2010), pp. 5–25.

“Aristotle and Evolutionary Altruism” in ΦΙΛΟΣΟΦΙΑ (Yearbook of the Research Centre of Greek Philosophy, Athens Academy) (2011), pp. 136–146.

“Joyce’s Early Aesthetic”, Journal of Modern Literature 34/2 (2011), pp. 97 – 120.

“The Triplex Via of Naming God”, The Review of Metaphysics 69 (2016), pp. 519–554.

‘Persona e spirito’, Divus Thomas 121 (2018), pp. 40 – 56.

“Immortality of the Soul in Plato and Aquinas”, Classics Ireland 27 (2020). Platonic Thought – and Action. Essays in Honour of Andrew Smith, pp. 356 – 395.

Vassilis Vassilikos: “Antiquity Revisited”, The Irish Review, 1990, pp. 61 – 69.

Dimitrios Koutras: “The Problem of Thought and Language in the Poem of Parmenides”, Essays on Ancient Greek and Byzantine Philosophy. Athens, 2002; pp. 11 – 19.

“Joyce and the Greeks”, Proceedings, Third European Conference of the European Society of Modern Greek Studies (Bucharest, 2 – 4 June 2006), ed. Konstantinos A. Dimadis, Ellinika Grammata, Athens, 2007, pp. 419 – 428.

“Aquinas on Pseudo-Dionysius’ Celestial Hierarchy”, Eleventh International Thomistic Congress, Rome, September 19 – 24, 2022. In press, 7330 words.

Introduction, At the Heart of the Real. Philosophical Essays in Honour of Archbishop Desmond Connell, Dublin: Irish Academic Press, 1992, pp. xiii – xv.

Introduction, Human Destinies. Philosophical Essays in Memory of Gerald Hanratty, Notre Dame University Press, 2012, pp. 1–18.

Introduction, What Happened in and to Moral Philosophy in the Twentieth Century? (Proceedings of conference in honour of Alasdair MacIntyre, Dublin, March 2009), Notre Dame University Press, (2013), pp. 1 – 15.

“John Cleary. A Personal Memory”, Studies on Plato, Aristotle and Proclus. Collected Essays on Ancient Philosophy of John J. Cleary, eds. John Dillon, Brendan O’Byrne, Fran O’Rourke. Leiden: Brill, 2013, pp. xxiii–xxix.

JoyceSong: CD with 18 pages of texts and notes.

Casadh na nAmhrán / Turning the Song: CD with 32 pages of texts, translations and notes.