Allegiance, System, and Use of Texts. On auctoritas of the Master and Dealing with Authoritative Texts in Platonism and Epicureanism in the Hellenistic and Imperial Age.

International Conference, February 16-18, 2017

Location: Toscanasaal, Residenz Würzburg

Date: February 16-18, 2017

Funding: Fritz Thyssen Stiftung, Philosophische Fakultät der Universität Würzburg

Hosts: Michael Erler, Jan E. Heßler, Federico M. Petrucci

Speakers and Chairmen: Saskia Aerts, George Boys-Stones, Bruno Centrone, Riccardo Chiaradonna, Vincenzo Damiani, Dino De Sanctis, Tiziano Dorandi, Margherita Erbì, Holger Essler, Franco Ferrari, Lloyd Gerson, Jürgen Hammerstaedt, David Konstan, Giuliana Leone, Christoph Markschies, Michael McOsker, Dirk Obbink, David Sedley, Christian Tornau, Mauro Tulli, Francesco Verde.

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At the end of the Classical age, the Garden and the Stoa joined the two glorious schools of Athens, the Academy and the Peripatos. This is the starting point for a complex framework of philosophical perspectives and theories which characterised the Hellenistic and Imperial Age (III B.C. – III A.D.). In these centuries, in fact, the schools developed (albeit in different ways) a continuous debate, both internally and externally: the masters’ doctrines were discussed and rethought in each school, and at the same time the dialectic relationships between scholarly traditions gave rise to polemics and reciprocal influences. This development came to an end, when Kepos and Stoa had became less attractive and Platonism und Aristotelianism reached a well-defined and objective-systematic identity with Plotinus and Alexander of Aphrodisias.The history of philosophy of the Hellenistic and the Imperial Age may in fact be regarded a history of systems, exegeses, and ways of considering the masters. It is the aim of this conference to observe these elements within two of the main philosophical traditions, that is, within Platonism and Epicureanism. They represent different approaches and perspectives within a common frame, consisting in a strict allegiance to the master and a philological attention to his texts. It is worth noting, moreover, that debates and polemics between these traditions are often (albeit not only) grounded on methodological points, such as the use of quotations and the search for consistency in the master’s texts. Moreover, it will be possible to address relevant related problems, such as the relationship between ancient philosophical scholarship and religious issues: it will be helpful to observe differences and similarities linked to the use of philosophical texts in religious works of the early imperial age, and the (both implicit and explicit) debate with religion which can be detected in philosophical texts. So we wish to establish both a comprehensive and authoritative arrival point of preceding research and a starting point for new perspectives on the following problems: how did the philosophers of these schools, time after time in their traditions, perceive and discuss their fundamental texts? What methods (well-structured or not, interdisciplinary, polemical, etc.) did they develop and apply to deal with the master’s texts, the predecessors, the other schools? How, when, and in which sense did each tradition rethink its doctrines as a system? How did the philosophers of each school perceive their affiliation to the school and their allegiance?

In contrast to Stoa und and Aristotelianism, the aspect of allegiance was of crucial importance for the interpretation of texts in the Epicurean and Platonic school, and therefore it will form the core and point of reference of the papers on particular writings and authors. In the frame of the conference it will also be possible to illuminate contexts like the relationship between philosophical doctrine and issues of religion, e.g. the dealing with Epicurean and Platonic texts in Christian writings of the Imperial age, or the (implicit and explicit) debate between pagan philosophers and religiously shaped authors. For the Epicureans, the cult of the founder of the school can provide important answers, because it is reflected throughout the texts and influenced the philosophical argumentation. During our conference, we will take a closer look at these issues in two consecutive sections on Platonism and Epicureanism.

Thursday (February 16, 2017)



Opening: Wolfgang Riedel (Vice-President of the JMU Würzburg), Roland Baumhauer (Dean of the Faculty of Arts, JMU Würzburg), Federico Petrucci, Michael Erler, Jan E. Heßler



Chair: Michael Erler

Federico Petrucci: Authority Beyond Doctrines: Plato Without (Middle) Platonism in the I Century BCE

Bruno Centrone: Authority and Doctrine in the Pseudo-Pythagorica





Chair: Christian Tornau

Christoph Markschies: Again: Origen and Platonism


Dinner with all participants


Friday (February 17, 2017)


Chair: Federico Petrucci

George Boys-Stones: The Hypothesis of Platonic Authority in Plutarch’s E at Delphi

Saskia Aerts: Conflicting Authorities? Hermias and Simplicius on the Self-Moving Soul





Chair: George Boys-Stones

Franco Ferrari: Il fine filosofico delle strategie filologiche nell’esegesi plutarchea dei dialoghi di Platone

Riccardo Chiaradonna: Exegesis, Criticism and Integration: The Reception of Aristotle’s Physics in early Neoplatonism (Plotinus and Porphyry)


Lunch break



Chair: Lloyd Gerson

Christian Tornau: Kathegemon. Zur Funktion der Berufung auf den philosophischen Lehrer in den neuplatonischen Kommentaren

Michael Erler: Mulier tam imperiosae auctoritatis. Zur Rolle von auctoritas in  griechischer und römischer Philosophie





Chair: Francesco Verde

Jan E. Heßler: Orthodoxie und Innovation in der Schule Epikurs. Einige Bemerkungen.

Vincenzo Damiani: Ἀστασιαστοτάτη πολιτεία (Numenius). Epicurean Allegiance from  the Outside Perspective



Chair: Mauro Tulli

David Sedley: Philosophical Authority in the Ancient World




Saturday (February 18, 2017)


Chair: Jürgen Hammerstaedt

Dino De Sanctis: La parola autorevole: i generi letterari nella produzione del Kepos

Margherita Erbì: Le lettere di Epicuro come testo autorevole nel Kepos





Chair: Dino De Sanctis

Giuliana Leone: Ortodossia e auctoritas: i libri del Περὶ φύϲεωϲ nella tradizione della Scuola di Epicuro

Michael McOsker: Demetrius Laco on the Auctoritas of the Master


Lunch break



Chair: Holger Essler

Tiziano Dorandi: Filodemo e Zenone di Sidone: Da Atene a Ercolano

Dirk Obbink: Critical Orthodoxy and Innovation in Philodemus’ On Piety





Chair: Jan E. Heßler

David Konstan: The Theory of Authority: Aristotle, Plutarch, and the Critique of Epicureanism

Jürgen Hammerstaedt: Epicurus and his Doctrine in the Inscription of Diogenes of Oenoanda

Closing discussion