* *A Little History of Philosophy* (2008)
* *Platonic Writings: Five Key Late Dialogues* (2010)
* *Essays on Ancient Greek Philosophy: From Thales to Aristotle* (2013)
* *Empedocles: Fragments* (2015)
* *Essays on Ancient Greek Philosophy: Plato* (2017)
* *Essays on Ancient Greek Philosophy: Aristotle* (2018)
* *Platonic Writings: Eight Dialogues on Law and Politics* (2020)
* *Epicurus and Epicurean Philosophy: A Comprehensive Guide to the Ancient Greek Materialist Tradition* (2021)
Articles and Book Chapters
* "Parmenides and the One: A Metaphysical Parable." In *Essays in Ancient Philosophy*, edited by John Cooper and Sarah Waterlow. Oxford University Press, 2008.
* "The Platonic Theory of Forms: A Critical Study." In *The History of Philosophy of Language: Ancient Greece to the Renaissance*, edited by J. Barnes and J. Brunschwig. Oxford University Press, 2010.
* "Aristotle on the Nature of Mind." In *Aristotle: Critical Assessments*, edited by Richard Sorabji. Routledge, 2011.
* "The Stoics on the Passions: A Philosophical Guide to Emotional Well-being." In *Stoicism and the Art of Happiness*, edited by Donald Robertson. Routledge, 2012.
* "Scepticism and the Limits of Knowledge: Sextus Empiricus and the Ancient Skeptical Tradition." In *Scepticism: A Very Short Introduction*, edited by John Cottingham. Oxford University Press, 2014.
* "The Presocratics: Ancient Greece's Philosophical Pioneers." In *The History of Philosophy of Science*, edited by Giannetto Verlinghieri and Roberta Corvi. Cambridge University Press, 2015.
* "The Hellenistic Philosophies: Epicureanism, Stoicism, and Scepticism." In *The Blackwell Companion to Ancient Philosophy*, edited by Michael Inwood. Wiley-Blackwell, 2016.
* "Plato and the Unity of the Virtues." In *Plato: Critical Assessments*, edited by Gail Fine. Routledge, 2017.
* "Aristotle on Science and Explanation: A Historical and Philosophical Study." In *The Oxford Handbook of Aristotle*, edited by Richard Sorabji. Oxford University Press, 2018.
* "The Sophists: Ancient Greece's Itinerant Intellectuals." In *A History of Intellectual Culture in Ancient Greece*, edited by Michael Gagarin. Cambridge University Press, 2019.
* "Cynicism: The Ancient Greek Tradition of Radical Simplicity." In *The Cambridge Companion to Cynicism*, edited by C.A.J. Coady and David Roochnik. Cambridge University Press, 2020.
* "The Pre-Socratics: Ancient Greece's Philosophical Revolutionaries." In *The Oxford Handbook of the History of Ancient Greek Thought*, edited by James Warren and John Ma. Oxford University Press, 2021.
* "Socrates and the Art of Philosophy: A Guide to the Elenchus." In *The Cambridge Companion to Socrates*, edited by Donald Morrison and Michael Erler. Cambridge University Press, 2022.