Jonathan Greig
Portrait of Jonathan Greig

Jonathan Greig

Postdoctoral research associate, HU Berlin

I work on ancient/late antique philosophy and Byzantine philosophy. This site gathers my publications, teaching, research in progress, and occasional notes and guides.

Approach

My broad academic interest lies in Plato and Aristotle (especially metaphysics, politics/ethics, and philosophy of religion) and how their arguments were developed and transformed in the late antique, esp. Neoplatonist, commentary tradition into the monotheistic philosophical traditions—especially early Christian and Byzantine, as well as Latin and Arabic/Islamic in tandem.

In this light, I am particularly interested in epistemic authority and how texts and arguments are reused and adopted in new contexts and (especially) arguments. My broad hypothesis is that all philosophical activity, historical and now, depends on how we engage with our predecessors’ own positions: autonomous philosophizingAt least on a popular conception of the Enlightenment. is a chimera.

In other words: good philosophy depends on history of philosophy. Plato, Aristotle, and their reception are a key foundation for philosophical reflection and the pursuit of wisdom—and necessary to engage the world beyond the ancients.

My current work addresses these questions with recent research on Neoplatonist metaphysics (esp. Damascius) Maximus the Confessor, Middle Byzantines (esp. Michael Psellos), and late Byzantine Platonism, alongside a computational project on text re-use in Byzantine philosophical texts. See the Current Research page for more.

Recent Talks
Aug. 24, 2026“Dionysius Inside and Outside Byzantium: Gennadios Scholarios’ Reading of the Ps.-Dionysius Between Thomas Aquinas and Earlier Byzantines”25th International Congress of Byzantine Studies, University of Vienna
Jun. 3, 2026“Histories of Greek Philosophy in the Prolegomena of 6th-century School of Alexandria: A Case Study of Olympiodorus”International Society of Neoplatonism Studies 2026 meeting, KU Leuven
May 28, 2026“Providence and the Soul between Proclus, the Chaldean Oracles, and Michael Psellos”Workshop on Proclus and Michael Psellos, University of Vienna
May 13, 2026“Platonism as the 15th Century Found It: Late Byzantine”Physis Symposium, workshop for the volume in development Cambridge History of Platonism in the Italian Renaissance

All talks and organized events

Highlight publications
01
Soul and Body in Maximus the Confessor: Between Aristotle, Neoplatonism, and Early Christianity Accepted
Journal of the History of Philosophy, forthcoming (expected early 2027).
02
with Joshua Robinson and Dragos Calma
History of Metaphysics 7. Leiden: Brill, 2025.

All publications, with abstracts and links

Teaching
Fall Semester 2024Introduction to Ancient Philosophy, Newman University
Spring Semester 2023Ancient Philosophical Inquiry, KU Leuven
Spring Semester 2022Ancient Philosophical Inquiry and Methodology, KU Leuven
Summer Semester 2018Ancient Philosophical Theology, LMU Munich

All courses (with syllabi), reading seminars, and thesis supervisions

Contact

jonathan.greig@hu-berlin.de

Humboldt-Universität zu Berlin
Institut für Klassische Philologie
Raum 3061
Unter den Linden 6
10099 Berlin, Germany
Diagram of the planetary harmonies, from a twelfth-century manuscript of Plato's Timaeus in Calcidius's translation
Plato, Timaeus (Calcidius), p. 102. Oxford, Bodleian Library, MS. Digby 23, Part 1. Via Source Library.