Riccardo Chiaradonna

It is doubtful whether the famous adagium that Western philosophy is a series of footnotes to Plato counts among Alfred North Whitehead’s most profound ideas. This sentence, however, captures a flourishing trend in recent scholarship. During the last two decades, studies on ancient Platonism and its posterity have been impressive for both their number and their quality. I would recall Matthias Baltes’s collection of sources Der Platonismus in der Antike, which aims to reconstruct the basic tenets of ancient Platonism by providing a translated edition with commentary on its fundamental texts (the...

The first part of this article focuses on Plotinus’ account of demiurgic causation in treatise VI, 7 [38]. Plotinus’ position is based on two assumptions : 1) the sensible cosmos is rationally ordered and its order depends on an intelligible prior cause ; 2) this order does not reflect any rational design on the part of the cause, since the cause has no reasoning or calculation in it. This view is spelled out against the background of Plotinus’ gradualist metaphysics and with respect to Plotinus’ philosophical sources. The second part of the article focuses on Porphyry, on the anonymous commentary on Plato’s Parmenides and on Iamblichus. Unlike Plotinus, Porphyry has no hesitation in employing concepts drawn from Aristotle’s logic as a resource for expressing his metaphysical theories. This approach can interestingly be set in parallel with that of the anonymous commentary to Plato’s Parmenides assigned to Porphyry by Pierre Hadot. A hitherto unnoticed parallel between these lines and Porphyry’s view on the divine hierarchy criticised in Iamblichus’ Response to Porphyry provides a new argument in support of Porphyry’s authorship of the Parmenides commentary.

Cet article porte sur Métaphysique, Z, 11. On examine en particulier la lecture par Frede et Patzig de la première partie de ce chapitre. Selon ces derniers, Aristote affirme : (1) que les définitions des substances naturelles sont exprimées à partir de leur forme et que toute référence à la matière doit être exclue de la définition ; (2) que les formes naturelles sont néanmoins liées de manière nécessaire et interne à un certain type de matière, car elles ne peuvent exister sans certaines parties matérielles. En réalité, une lecture attentive du chapitre ne permet de soutenir ni (1) ni (2). Un être humain ne diffère pas d’un cercle de bronze en raison de son instantiation nécessaire dans un certain type de matière. La différence consiste plutôt dans l’existence de parties fonctionnelles. Les parties fonctionnelles peuvent être mentionnées, en tant qu’elles sont fonctionnelles, dans la définition formelle des substances naturelles.