The aim of this paper is to provide some acquaintance with the exegetical history of ἐξαίφνης inside the Platonic Tradition, from Plato to Marsilio Ficino, by way of Middle Platonism and Greek Neoplatonism. (Since this is only a draft, several modifications should be made later, notably in order to improve the English.) Some part has been presented in Los Angeles: “Damascius’ Theodicy: Psychic Input of Disorder and Evil into the World”, 16th Annual ISNS (International Society for Neoplatonic Studies) Conference, Loyola (...) Marymount University, 14th June 2018. (shrink)

Metaphysicians who are aware of modern physics usually follow Putnam (1967) in arguing that Special Theory of Relativity is incompatible with the view that what exists is only what exists now or presently. Partisans of presentism (the motto ‘only present things exist’) had very difficult times since, and no presentist theory of time seems to have been able to satisfactorily counter the objection raised from Special Relativity. One of the strategies offered to the presentist consists in relativizing existence to inertial (...) frames. This unfashionable strategy has been accused of counterfeiting, since the meaning of the concept of existence would be incompatible with its relativization. Therefore, existence could only be relativistically invariant. In this paper, I shall examine whether such an accusation hits its target, and I will do this by examining whether the different criteria of existence that have been suggested by the Philosophical Tradition from Plato onwards imply that existence cannot be relativized. (shrink)

The development of symbolic logic is often presented in terms of a cumulative story of consecutive innovations that led to what is known as modern logic. This narrative hides the difficulties that this new logic faced at first, which shaped its history. Indeed, negative reactions to the emergence of the new logic in the second half of the nineteenth century were numerous and we study here one case, namely logic at Oxford, where one finds Lewis Carroll, a mathematical teacher who (...) promoted symbolic logic, and John Cook Wilson, the Wykeham Professor of Logic who notoriously opposed it. An analysis of their disputes on the topic of logical symbolism shows that their opposition was not as sharp as it might look at first, as Cook Wilson was not so much opposed to the « symbolic » character of logic, but the intrusion of mathematics and what he perceived to be the futility of some of its problems, for logicians and philosophers alike. (shrink)

The question of ontological foundation has undergone a noteworthy revival in recent years: metaphysicians today quarrel about how exactly to understand the asymmetrical and hyperintensional relationship of grounding. One of the reasons for this revival is that the old quantificationalist meta-ontology inherited from Quine has been effectively criticised by leading philosophers favourable to a meta-ontology, the aim of which is to come to know “which facts/items ground (constitute the base of) which other facts/items”, thus to examine the relation of ontological (...) dependence between beings (e.g. chemical properties depend on physical properties, the economic situation on the behaviour of individuals etc.), i.e. to explore the hierarchical structure of reality. I shall not discuss here the relationship of grounding in itself, but make some historical-formal remarks on the properties of the ultimate ontological foundational item itself and its aporetic nature. To do so I explore various more or less exotic philosophical ecosystems in the following order: Heidegger (Seyn), Plato (ἕν), Wáng Bi (道, dào). On the way I shall propose a new interpretation both of certain hypotheses in the Parmenides and of the nature of the opposition between Wáng Bì and Guō Xiàng in regard to the logical grammar of the expression “nothing (無, wú)” (transl. J. Dudley). (shrink)

Descartes ne joue pas, dans la pensée de Heidegger, un rôle limité à l'interprétation de l'histoire de la philosophie. Lorsque Sein und Zeit entreprend de déterminer le mode d'être propre et irréductible du Dasein, Heidegger doit entrer en confrontation avec certes Husserl, mais surtout, par-delà la « conscience » husserlienne, avec Descartes lui-même. Car l'ennemi mortel du Dasein, cest l'ego du cogito. Dans quelle mesure cette rivalité n'induit-elle pas aussi une similitude? Die Rolle, die Descartes in dem Denken von Heidegger (...) spielt, darf nicht in dem Feld seiner Deutung der Geschichte der Philosophie eng begrenztwerden. Denn, als Sein und Zeit eine Bestimmung der eigentümlicheigentlichen Seinsweise des Daseins hervorzubringen unternimmt, setzt die « Destruktion der Geschichte der Ontologie » eine Auseinanderstzung nicht nur mit Husserl, sondern auch, über Husserl hinaus, gerade mit Descartes vor. Der Todfeind des Daseins ist das ego, das aus dem cogito stammt. Inwiefern aber diese ständige Gegenüberstellung eine tiefe Nachahmung hinweise ? (shrink)

Review of: R. Polansky & W. Wians (eds.), Reading Aristotle. Argument and Exposition, Leiden/Boston, Brill, 2017, in Revue philosophique de Louvain, 117, p. 166-169.