• “Goodness, Unity, and Creation in the Platonic Tradition,” forthcoming in Why is There Something Rather Than Nothing?, edited by John Wippel
  • “Platonism and the Search for a First Principle of All,” forthcoming in Philosophy Compass (electronic journal), 2006
  • “The ‘Holy Solemnity’ of Forms and the Platonic Interpretation of the Sophist,” Ancient Philosophy ۲۶ (۲۰۰۶), ۱-۱۴
  • “Ontological Priority,” forthcoming
  • “Definition and Essence in the Platonic Dialogues,” Methexis ۱۹ (۲۰۰۶), ۳۷-۵۵
  • “A Platonic Reading of Plato’s Symposium, ۳۲ pp. typescript, forthcoming in Plato’SymposiumNew Perspectives, edited by J. Lesher, D. Nails, F. Sheffield (Cambridge: Harvard University Press, 2006)
  • “Plotinus’ Philosophy of Religion,” forthcoming in History of Western Philosophy of Religion. Edited by G. Oppy and N. Trakakis (Chesham: Acumen, 2006)
  • “Aristotelian Teleology in Platonic Context,” forthcoming in a book on the Aristotelian tradition edited by K. Knight and A. Bielskas
  • “Sextus Empiricus,” forthcoming in The New Encyclopedia of Unbelief. Edited by Thomas Flynn (Buffalo: Prometheus Books, 2006)
  • “Plato on Understanding,” The Southern Journal of Philosophy ۴۳ (۲۰۰۵), ۱-۲۸
  • “Platonic Knowledge and the Standard Analysis,” International Journal of Philosophical Studies ۱۴ (۲۰۰۶), ۴۵۵-۷۴
  • “Plotinus on Weakness of the Will,” forthcoming in Studies in the History of Philosophy. Edited by T. Hoffman (Washington, D.C.: Catholic University of America Press, 2005)
  • “Plato’s Gorgias and ‘Political Happiness’,” forthcoming in Proceddings of the VII Symposium Platonicum, 2006. Edited by Michael Erler
  • “When Rorty Met Plato…,” forthcoming in Plato and Modernism. Edited by C. Cunningham, 45pp. typescript
  • “Plato on Identity, Sameness, and Difference,” Review of Metaphysics ۵۸ (۲۰۰۴), ۱۰۶-۳۲
  • “Is Platonic Knowledge Possible?,” Plato ۴ (۲۰۰۴) (electronic journal), 15pp. typescript
  • “Plotinus,” Stanford Encyclopedia of Philosophy (electronic database).
  • “Platonism and the Invention of the Problem of Universals,” Archiv für Geschichte der Philosophie ۸۷ (۲۰۰۴), ۱-۲۶
  • “The Morality of Nations: An Aristotelian Approach,” forthcoming in Aristotle’s Politics Today. Edited by R. Talisse and L. Goodman (Albany: SUNY, 2006)
  • “The Neoplatonic Interpretation of Plato’s Ethics,” in Plato Ethicus. Edited by Maurizio Migliori and Linda Napolitano (Sankt Augustin: Academica Verlag, 2004), 151-64
  • “What is Platonism?,” Journal of the History of Philosophy ۴۳ (۲۰۰۵), ۲۵۳-۷۶
  • “The Unity of Intellect in Aristotle’s De Anima,” Phronesis ۴۹ (۲۰۰۴), ۳۴۸-۷۳
  • “Platonism in Aristotle’s Ethics,” Oxford Studies in Ancient Philosophy ۲۲ (۲۰۰۴), ۲۱۷-۴۹
  • “On the Harmony of Plato and Aristotle,” in Reading Plato in Antiquity. Edited by Harold Tarrant and Dirk Baltzly (London: Duckworth, 2006), 195-221
  • “Plotinus’ Criticism of Epicurean Epistemology,” in Epicurus. His Continuing Influence and Contemporary Relevance. Edited by D. Gordon and D. Suits (Rochester: RIT Press, 2003), 69-80
  • “Incontinence in Plato’s Laws,” in Plato’s Laws: From Theory Into Practice. Edited by Luc Brisson and Samuel Scolnicov (Sankt Augustin: Academia Verlag, 2003), 149-54
  • “Plato’s Development and the Development of the Theory of Forms,” in Plato’s Forms. Varieties of Interpretation. Edited by William Welton (Lanham, Md.: Lexington Books, 2002), 85-109
  • “The Development of the Doctrine of the Good and Plato’s Development,” in New Images of Plato. Dialogues on the Idea of the Good. Edited by Giovanni Reale and Samuel Scolnicov (Sankt Augustin: Academia Verlag, 2003), 379-91
  • “The Presence and the Absence of the Divine in Platonism,” in Metaphysik und Religion. Zur Signatur des spätantiken Denkens. Edited by Theo Kobusch and Michael Erler (Leipzig: K.G. Saur, 2002), 365-86
  • “Neoplatonism,” Blackwell’s Companion to Ancient Greek Philosophy. Edited by Christopher Shields. (Oxford: Blackwell, 2003), 303-23
  • “Metaphor as an Ontological Concept,” in Plotin et le langage. Edited by Michel Fattal. (Paris: Beauchesne, 2003), 255-69
  • “Elenchus, Protreptic, and Platonic Philosophizing,” in Did Socrates Have a Method? Edited by Gary Scott. (University Park, PA: Pennsylvania University Press, 2002), 217-31
  • “Plotinus on Being and Knowing,” in Neoplatonism and Indian Philosophy. Edited by Paulos Mar Gregorios and R.B. Harris (Albany: SUNY, 2001), 111-32
  • “Plotinus’ Attack on Aristotelian Essentialism” in Neoplatonism and Nature. Edited by Michael Wagner (Albany: SUNY, 2001), 59-74
  • “Knowledge and the Self in Plato’s Philosophy,” in Proceedings of the Boston Area Colloquium in Ancient Philosophy. v.15. Edited by John Cleary and Gary Gurtler (Leiden: Brill, 2000), 231-53
  • “Plato Absconditus,” in Who Speaks for Plato? Edited by Gerald Press (Lanham, Md.: Rowman and Littlefield, 2000), 201-10
  • “The Recollection Argument Revisited,” in Recognition, Remembrance, and Reality. Edited by Mark McPherran. Apeiron Supplementary Volume 32 (1999), 1-16
  • “The Concept of the Concept in Platonism,” in Traditions of Platonism. Edited by John Cleary (Aldershot: Ashgate, 1999), 65-80