In my books and papers, I focus on questions that figure both in ancient and contemporary discussions: What are values? What kind of values are knowledge and truth? What is the role of epistemic norms in ethics? Currently, I’m aiming to develop a metaethical theory that accounts for difference and disagreement (2020 and forthcoming). And I’m returning to related themes in Stoic logic (forthcoming), physics (2021) and ethics (2021) and Pyrrhonian skepticism (2020 and forthcoming).

Zoom 2020

In my recent Desiring the Good: Ancient Proposals and Contemporary Theory (OUP, 2017, paperback 2021), I aim to show in which sense it may be true that human beings are “the measure” such that this is not a relativist proposal, but an insight about the nature of ethics. In Imagination and Agency, I aim to clarify the Aristotelian dictum that deliberation is about the possible, and what it means that some decision is right. I co-authored three papers with Jens Haas, “Incomplete Ignorance” (2020), “Ignorance and Investigation” (2015), and “Love and Hatred” (2018). In a new volume, Epistemology After Sextus Empiricus (OUP, 2020), co-edited with Justin Vlasits, I return to my long-term interest in skepticism, and I’m finalizing a set of related papers for a monograph, tentatively entitled The Original Stoics.

I’m an editor of Nous, one of the two North American co-editors of the Archiv für Geschichte der Philosophie, and serve on the editorial boards of the Journal of Philosophy, Apeiron, and Rhizomata, and as Associate Editor for philosophy of language, epistemology, and logic of Dialogoi: Ancient Philosophy Today. At Columbia University and due to the pandemic, I became interested in the opportunities and challenges of teaching and conducting research remotely. I’m chairing a subcommittee of the Policy and Planning Committee on Teaching Modalities and I’m an academic sponsor of Logic Made Accessible, a project devoted to making ancient logic freely accessible for students of all ages.

When I’m not in NYC, I’m traveling with photographer and artist Jens Haas. On the Road has become an art project and a philosophical diary. Movies and Morals, in collaboration with H8URS, is a growing series of video commentary on philosophy and art in contemporary film and television shows.