Jan Opsomer

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Address: De Wulf-Mansion Centre for Ancient, Medieval, and Renaissance Philosophy
Institute of Philosophy
Kard. Mercierplein 2
B-3000 Leuven
Belgium

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Papers by Jan Opsomer

In the Spirit of Plato

Cambridge University Press eBooks, Jun 30, 2023

Spuren einer wissenschaftlichen platonischen Theologie in Salustios’ De deis*

Mohr Siebeck eBooks, 2022

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Favorinus Versus Epictetus on the Philosophical Heritage of Plutarch

Plutarch's Defence of the Τheages, in Defence of Socratic Philosophy?

Philologus, Jun 1, 1997

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Een apologeet van de woede? Aristoteles over een gevoel

Tijdschrift Voor Filosofie, 2015

© 2015 by Tijdschrift voor Filosofie. All rights reserved. Aristotle examines emotions in differe... more © 2015 by Tijdschrift voor Filosofie. All rights reserved. Aristotle examines emotions in different works and from different perspectives. Ontologically, they are categorized as passing qualitative states of the soul. Yet they have both a bodily and a psychological (mental) aspect. While a proper definition of any emotion would need to render both aspects, in his Rhetoric Aristotle merely offers nominal definitions of emotions in general and of single emotions. He produces a sophisticated analysis of anger, which he defines as a response to a perceived slight. The angry person seeks revenge, which consists in his or her regaining his or her superiority. In order to achieve this, it is necessary that the victim, that is the person responsible for the earlier slight, recognizes that she or he is made to suffer the revenge of the angry person. Anger is therefore accompanied by pain and pleasure: pain because of the perceived slight, pleasure because of the hope for revenge. Anger is morally neutral, but there are good and bad ways of being angry.status: publishe

In defence of geometric atomism

Oxford University Press eBooks, Apr 5, 2012

Evanghélos Moutsopoulos, Structure, présence et fonctions du kairos chez Proclus

Revue Philosophique de Louvain, 2005

Opsomer Jan. Evanghélos Moutsopoulos, Structure, présence et fonctions du kairos chez Proclus. In... more

Essence, Power, and Activity in Proclus' Philosophy of Nature

Being (Essence)-Power-Activity in Souls and Intellect When in De malorum subsistentia Proclus dis... more Being (Essence)-Power-Activity in Souls and Intellect When in De malorum subsistentia Proclus distinguishes between levels at which things can be affected by evil, he repeatedly refers to the distinction between essence (being), power, and activities. A major claim, for instance, is that human souls can be affected in their activities and powers, but not in their essence, whereas divine souls can be affected only in their activities. In other words, whatever happens to souls, their powers remain intact, yet their activities can be obstructed. Bodies, however, can be corrupted in their very essence:

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MARIE-LUISE LAKMANN, Der Platoniker Tauros in der Darstellung des Aulus Gellius (Philosophia antiqua, 63). Leiden–New York–Köln, E.J. Brill, 1995. xi, 294 p. Pr. Hfl. 147,—

Mnemosyne, 1997

Proclus’ Elements of Theology and Platonic Dialectic

Reading Proclus and the <i>Book of Causes</i>, Volume 3, 2022

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In defence of geometric atomism. Explaining elemental properties

Arguments non-linéaires et pensée en cercles. Forme et argumentation dans les Questions platoniciennes de Plutarque

Wat weten we over de goden? Polemieken over filosofie en religie in Cicero's De natura deorum

Drittes Bett, Artefakt-Ideen und die Problematik, die Ideenlehre zu veranschaulichen

A Craftsman and his Handmaiden. Demiurgy According to Plotinus

Favorinus Versus Epictetus on the Philosophical Heritage of Plutarch

Plutarch and His Intellectual World

Logic and Exegesis: The Logical Reconstruction of Arguments in the Greek Commentary Tradition

History of Philosophy & Logical Analysis, 2021

The exegesis of canonical philosophical texts-mostly of Plato and Aristotle-was part and parcel o... more The exegesis of canonical philosophical texts-mostly of Plato and Aristotle-was part and parcel of the late antique way of doing philosophy. This led to a rich tradition of commentaries for the related purposes of teaching and research. The syllogistic presentation of the arguments contained in the source texts was often considered as an important part of the commentator's job. Often, but not always, the reconstruction of arguments was used to demonstrate the consistency and logical cogency of these texts and thus served to establish or protect their epistemic authority. A precise understanding of the purposes and methods of logical reconstruction adopted in the commentaries sheds light on the philosophy of their authors, on their understanding of the content and method of the source texts, and on their use of logic-and in particular syllogistic-as an exegetical tool. The use of logical reconstructions in the ancient commentary tradition raises a number of philosophical and exegetical issues. What is the precise way in which the commentators reconstruct the arguments of their source texts? What types of syllogistic do they use? Is their logic a mere amalgam of Aristotelian, Stoic, and Eleatic elements or do they have a distinctively Platonic approach? What are the aims of such logical reconstructions? What is logical reconstruction supposed to contribute to the exegesis in different contexts? And how do the commentators evaluate their sources on the basis of their proposed reconstructions? These and other relevant questions were discussed at the conference "Logic and exegesis in the ancient commentary tradition

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Virtue, Fortune, and Happiness in Theory and Practice

Virtues for the People, 2011

Self-motion according to Iamblichus

Elenchos, 2012

Iamblichus' theory of self-motion has to be pieced together from various texts and passing re... more Iamblichus' theory of self-motion has to be pieced together from various texts and passing remarks. Ever since Aristotle's critique, Plato's concept of the self-motive soul was felt to be problematic. Taking his lead from Plotinus, Iamblichus counters Aristotle's criticism by claiming that true self-motion transcends the opposition between activity and passivity. He moreover argues that it does not involve motion that is spatially extended. Hence it is non-physical. Primary self-motion is the reversion of the soul to itself, by which the soul constitutes itself, i.e. imparts life to itself. This motion is located at the level of essence or substance. The bestowal of life upon the body derives from this fundamental motion. As a result, animals are derivatively self-motive. Secondary self-motions are acts of thought in the broad sense. Contrary to the unmoved motion of intellect, the self-motion of the soul is not beyond time. This somehow fits Iamblichus' theory o...

Wirkung

Aristoteles-Handbuch, 2011

In the Spirit of Plato

Cambridge University Press eBooks, Jun 30, 2023

Spuren einer wissenschaftlichen platonischen Theologie in Salustios’ De deis*

Mohr Siebeck eBooks, 2022

Download

Favorinus Versus Epictetus on the Philosophical Heritage of Plutarch

Plutarch's Defence of the Τheages, in Defence of Socratic Philosophy?

Philologus, Jun 1, 1997

Download

Een apologeet van de woede? Aristoteles over een gevoel

Tijdschrift Voor Filosofie, 2015

In defence of geometric atomism

Oxford University Press eBooks, Apr 5, 2012

Evanghélos Moutsopoulos, Structure, présence et fonctions du kairos chez Proclus

Revue Philosophique de Louvain, 2005

Opsomer Jan. Evanghélos Moutsopoulos, Structure, présence et fonctions du kairos chez Proclus. In... more

Essence, Power, and Activity in Proclus' Philosophy of Nature

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MARIE-LUISE LAKMANN, Der Platoniker Tauros in der Darstellung des Aulus Gellius (Philosophia antiqua, 63). Leiden–New York–Köln, E.J. Brill, 1995. xi, 294 p. Pr. Hfl. 147,—

Mnemosyne, 1997

Proclus’ Elements of Theology and Platonic Dialectic

Reading Proclus and the <i>Book of Causes</i>, Volume 3, 2022

Download

In defence of geometric atomism. Explaining elemental properties

Arguments non-linéaires et pensée en cercles. Forme et argumentation dans les Questions platoniciennes de Plutarque

Wat weten we over de goden? Polemieken over filosofie en religie in Cicero's De natura deorum

Drittes Bett, Artefakt-Ideen und die Problematik, die Ideenlehre zu veranschaulichen

A Craftsman and his Handmaiden. Demiurgy According to Plotinus

Favorinus Versus Epictetus on the Philosophical Heritage of Plutarch

Plutarch and His Intellectual World

Logic and Exegesis: The Logical Reconstruction of Arguments in the Greek Commentary Tradition

History of Philosophy & Logical Analysis, 2021

Download

Virtue, Fortune, and Happiness in Theory and Practice

Virtues for the People, 2011

Self-motion according to Iamblichus

Elenchos, 2012

Wirkung

Aristoteles-Handbuch, 2011

(&Herwig Görgemanns, Barbara Feichtinger, Fritz Graf, Werner Jeanrond) Plutarch, Dialog über die Liebe. Amatorius (SAPERE, 10), Tübingen, Mohr Siebeck, 2006, 332 p.

Timaeus, in: Plato. Verzameld Werk. Nieuwe, geheel herziene uitgave van de vertaling van Xaveer de Win, vijfde deel, p. 185-300

DE VVULr-MANSIONCENTA ~ Kardinaa! Marcierplein ~ B -3(l(ln t Fl nn: .. Lru 8 16' l 'H2... Eerste ... more DE VVULr-MANSIONCENTA ~ Kardinaa! Marcierplein ~ B -3(l(ln t Fl nn: .. Lru 8 16' l 'H2... Eerste druk van deze heruitgave, bewerkt naar de derde druk van de oorspronkelijke uitgave. ©Copyright 1999, Uitgeverij Pelckmans, Kapellen Alle rechten voorbehouden. Niets uit deze uitgave mag worden verveelvoudigd, opgeslagen in een geautomatiseerd gegevensbestand, of openbaar gemaakt, in enige vorm, of op enige wijze, hetzij elektronisch, mechanisch, door fotokopieën, opnamen, of enig andere manier, zonder voorafgaande schriftelijke toestemming van de uitgever. ISBN-deel V-Pelckmans -90 289 2752 2 ISBN -deel V -Agora -90 391 0799 8 ISBN-5 delen-Pelckmans -90 289 2548 1 ISBN-5 delen-Agora-90 391 0750 5 D/1999/0055/198 (set); D/1999/0055/212 (deel V) 18-19 TIMAEUS IK'J 27-28 TIM/\EUS 201

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(& Marcel van Ackeren), Selbstbetrachtungen und Selbstdarstellungen. Der Philosoph und Kaiser Marc Aurel im interdisziplinären Licht. Meditations and representations. The philosopher and emperor Marcus Aurelius in an interdisciplinary light.

(& M. Bonazzi) The Origins of the Platonic System. Platonisms of the Early Empire and their Philosophical Contexts (Collection d’Études Classiques, 23), Louvain - Namur - Paris - Walpole, MA, Peeters - Société des Études Classiques, 2009, 227 p.

(& C. Steel), Proclus. Ten Problems concerning Providence (The Ancient Commentators), London, Bristol Classical Press, 2012. viii + 183 p.

(& C. Steel), Proclus. On the Existence of Evils. Translation with Introduction and Notes (The Ancient Commentators), London, Duckworth - Ithaca, Cornell University Press, 2003

In Search of the Truth. Academic Tendencies in Middle Platonism (Verhandelingen van de Koninklijke Academie voor Wetenschappen, Letteren en Schone Kunsten van België, Klasse der Letteren, Nr. 163), Brussel, 1998, 332 p.

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KU Leuven open workshop: Aristotle, Time and Phenomenology

by Andrea Cimino and Jan Opsomer

Open workshop on Aristotle, Time, and Phenomenology organized by the KU Leuven's De Wulf-Mansion ... more Open workshop on Aristotle, Time, and Phenomenology organized by the KU Leuven's De Wulf-Mansion Centre for Ancient, Medieval and Renaissance Philosophy and the Husserl-Archives Centre for Phenomenology and Continental Philosophy. The workshop will be be held on Friday, December 9th in Raadzaal (HIW), Leuven, 3000 Belgium, from 1 to 4 pm.

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KU Leuven international conference: Aristotle and Phenomenology: Departures and Returns

by Andrea Cimino, Jan Opsomer, and Saskia Aerts

Ever since its inaugural impulse in Brentano’s thinking, phenomenological philosophy has time and... more Ever since its inaugural impulse in Brentano’s thinking, phenomenological philosophy has time and again been reborn of an essential confrontation with Aristotle and Aristotelianism. Whether explicitly or implicitly, the development of phenomenological philosophy through its key figures—Husserl, Heidegger, Merleau-Ponty, Derrida, Patočka, and others—has sought to measure itself, its distance as well as proximity, in relation to the legacy of Aristotle’s thinking. This presence of Aristotle and Aristotelianism within phenomenological thought has taken different forms, with various thematic orientations (the body, time, language, metaphysics, etc.) and methods of engagement. Yet, an elemental form of this relationship is an incessant movement of departure and return, or searching. The history of phenomenological thought is as emphatically a departure from Aristotle (“metaphysics of presence,” “ontology of substance,” “logical prejudice,” etc.) as it is an emphatic return to the phenomenological yield of Aristotle’s thinking.

This conference is organized in the broader context of the celebration of the 2,400 years anniversary “Aristotle Today.” Under the auspices of the Center for Historical Ontology (Heidelberg – Helsinki – Leuven), 13 conferences on different aspects of Aristotle’s thinking and its reception were organized in 2016 (for a full list: www.c-h-o.eu) in major European universities (and in the USA).

The conference will held on December 12-14 in the Huis Bethlehem (Auditorium Wolfspoort), Schapenstraat 34, Leuven, 3000 Belgium.

For further information, please check the official website: http://aristotle2016.ophen.org/

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Opsomer Ofellius Laetus draft.pdf

Now published as: Ofellius Laetus, Platonist: Natural History and Alien Wisdom in the First Centu... more Now published as: Ofellius Laetus, Platonist: Natural History and Alien Wisdom in the First Century CE, in: Yosef Z. Liebersohn, Ivor Ludlam, Amos Edelheit (eds.), For a Skeptical Peripatetic. Festschrift in Honour of John Glucker (Studies in Ancient Moral and Political Philosophy, 3), Sankt Augustin, Academia Verlag, 2017, 250-263.

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