Research

Edited Volumes

•  with G. Anthony Bruno, Transformation and the History of Philosophy  (Routledge, 2024).

• with Jens Kristian Larsen and Vivil Valvik Haraldsen, New Perspectives on Platonic Dialectic  (Routledge, 2022) .

• with Katja Maria Vogt, Epistemology after Sextus Empiricus  (OUP, 2020).

Journal Articles

• “The Pyrrhonian Use of Dogmatic Methods: Definition & Division”, in History of Philosophy & Logical Analysis (online first).

• With Freya Möbus, “Division and Animal Sacrifice in Plato’s Statesman”, Archai 34 Supplement (2024), 1-28.

• “The Puzzle of the Sophist”, Archiv für Geschichte der Philosophie 105.3 (2023), 359-387. [Published Version]

• "Everything is Conceivable: A Note on an Unused Axiom in Spinoza's Ethics", British Journal for the History of Philosophy 30:3 (2022), 496-507. [Preprint] [Published Version]

• “Margaret MacDonald’s Scientific Common-Sense Philosophy”, British Journal for the History of Philosophy 30:2 (2022), 267-287. [Preprint] [Published Version]

• “Division, Syllogistic, and Science in Prior Analytics I.31”, Ergo 8:10 (2021), 269-305. [Preprint] [Published Version]

• “Pyrrhonism and the Dialectical Methods: The Aims and Argument of Outlines of Pyrrhonism II”, History of Philosophy & Logical Analysis 23 (2020), 225-252. [Preprint] [Published Version]

• "Mereology in Aristotle's Assertoric Syllogistic," History and Philosophy of Logic 40.1 (2019), 1-11. [Preprint] [Published Version]

Book Chapters

• “TBD: Sextus Empiricus on Inquiry and Suspension of Judgment”, in Verena Wagner and Alexandra Zinke (eds.), Suspension in Epistemology and Beyond (Routledge, 2025), 207-224.

• With Richard Lawrence, “Olga Hahn, On the Coefficients of a Logical Equation and their Relation to the Theory of Valid Inference: Translators' Introduction”, in Colin Guthrie King and Venanzio Raspa (eds.), Aristotle's Organon in the Old and New Logic: 1800-1950 (Bloomsbury, 2025), 243-252.

• “The Dangers of Sects: Lucian, Galen, and Sextus Empiricus”, in G. Anthony Bruno and Justin Vlasits (eds.), Transformation and the History of Philosophy (Routledge, 2024), 66-79.

• “Plato on the Varieties of Knowledge”, in Jens Kristian Larsen, Vivil Hareldsen, Justin Vlasits (eds.), New Perspectives on Platonic Dialectic (Routledge, 2022). 

• With G. Anthony Bruno, Section Introductions, in G. Anthony Bruno and Justin Vlasits (eds.), Transformation and the History of Philosophy (Routledge, 2024), 3-4, 103-104, 189-190, 287-288.

• With Jens Kristian Larsen and Vivil Valvik Hareldsen, “Introduction”, in Jens Kristian Larsen, Vivil Hareldsen, Justin Vlasits (eds.), New Perspectives on Platonic Dialectic (Routledge, 2022).

• “Plato on Poetic and Musical Representation Representation”, in Julia Pfefferkorn and Antonino Spinelli (eds.), Platonic Mimesis Revisited (Academia, 2021). [Final Version]

• "The First Riddle of Induction" in Epistemology after Sextus Empiricus, eds. Vogt and Vlasits, (OUP, 2020) [Final Version]

• With Katja Maria Vogt, "Introduction", in Epistemology after Sextus Empiricus, eds. Vogt and Vlasits, (OUP, 2020) [Final Version]

Translations

• Translation and Introduction: “Selected Fragments”, in C.D.C. Reeve (ed.), Aristotle: Complete Works Volume 2 (Hackett, 2025), 957-1038.

• With Richard Lawrence, “On the Coefficients of a Logical Equation and their Relation to the Theory of Valid Inference” by Olga Hahn, in Colin Guthrie King and Venanzio Raspa (eds.), Aristotle's Organon in the Old and New Logic: 1800-1950 (Bloomsbury, 2025), 253-280.

• “The Gods in the Fragments” in C.D.C. Reeve (ed.). Aristotle's Theology: The Primary Texts (Hackett, 2022), 141-148.

Reviews and Reference Works

•  Literature update for Taneli Kukkonen, “Arabische Philosophie”, in Klaus Corcilius and Christoph Rapp (eds.), Aristoteles Handbuch  2nd edition (Metzler, 2021), 485-495.

• “Review of Stefan Sienkiewicz, Five Modes of Scepticism: Sextus Empiricus and the Agrippan Modes ”, Journal of the History of Philosophy  58(4) (2020), 813-814.

• Robby Finley, Justin Vlasits, and Katja Maria Vogt, “Greek and Roman Logic”, in Ruth Scodel (ed.), Oxford Bibliographies in Classics (OUP, 2019). [Offprint] [Published Version]

• Review of Gail Fine, The Possibility of Inquiry: Meno's Paradox from Socrates to Sextus, British Journal for the History of Philosophy 23 (2015), 580-583.  [Preprint] [Published Version]

Dissertation: Platonic Division and the Origins of Aristotelian Logic

Aristotle's syllogistic theory, as developed in his Prior Analytics, is often regarded as the birth of logic in Western philosophy. My dissertation argues that Platonic division—a method which aims to give accounts of essences of natural kinds by progressively narrowing down from a genus—was a crucial influence on Aristotle's logical theory. Plato sought norms for division that would apply in any domain whatsoever; this idea of a rigorous, general method was taken up and developed by Aristotle in his syllogistic. Aristotle also used Plato's conception of predication as parthood in his semantics for syllogistic propositions. My study of these connections includes a proof that a semantics based on Platonic divisional structures is sound and complete for the deduction system that models Aristotle's syllogistic. [Final version]