This paper explores the Aristotelian context of the real distinction between existence and essence thought to be posited in Thomas Aquinas’ early workDe Ente Et Essentia. In doing so, the paper situates its own position in the context of contemporary scholarship and in relation to the contemporary trend to downplay Aristotle’s influence in Thomas Aquinas’ philosophy. The paper argues that re-readingDe Ente Et Essentiain this way sheds new light on some of the crucial debates in contemporary Thomist scholarship, particularly with (...) respect to the analogous relation between potency and act: essence and existence, the distinction between conceptual and causal explanation, and the relationship between philosophy and theology in the thought of Thomas Aquinas. (shrink)

In 1931 eminent chemist Fritz Paneth maintained that the modern notion of “element” is closely related to (and as “metaphysical” as) the concept of element used by the ancients (e.g., Aristotle). On that basis, the element chlorine (properly so-called) is not the elementary substance dichlorine, but rather chlorine as it is in carbon tetrachloride. The fact that pure chemicals are called “substances” in English (and closely related words are so used in other European languages) derives from philosophical compromises made by (...) grammarians in the late Roman Empire (particularly Priscian [fl. ~520 CE]). When the main features of the constitution of isotopes became clear in the first half of the twentieth century, the formal (IUPAC) definition of a “chemical element” was changed. The features that are “essential” to being an element had previously been “transcendental” (“beyond the sphere of consciousness”) but, by the mid-twentieth century the defining characteristics of elements, as such, had come to be understood in detail. This amounts to a shift in a “horizon of invisibility” brought about by progress in chemistry and related sciences. Similarly, chemical insight is relevant to currently-open philosophical problems, such as the status of “the bundle theory” of the coherence of properties in concrete individuals. (shrink)

Desperately difficult texts inevitably elicit desperate hermeneutical measures. Aristotle's De Anima, book three, chapter five, is evidently one such text. At least since the time of Alexander of Aphrodisias, scholars have felt compelled to draw some remarkable conclusions regarding Aristotle's brief remarks in this passage regarding intellect. One such claim is that in chapter five, Aristotle introduces a second intellect, the so-called 'agent intellect', an intellect distinct from the 'passive intellect', the supposed focus of discussion up until this passage.1 This (...) view is a direct descendent of the view of Alexander himself, who identified the agent intellect with the divine intellect.2 Even the staunchest defender of such a view is typically at a loss to give a plausible explanation of why the divine intellect pops into and then out of the picture in the intense and closely argued discussion of the human intellect that goes from chapter four through to the end of chapter seven.3 Revolting against an extravagant postulation of entities, Michael Wedin, for example, has argued with considerable subtlety and ingenuity that there is in fact only one intellect discussed in De Anima.4 This unified intellect is fully capable of being integrated into Aristotle's hylomorphic psychology. In order to make his case, though, Wedin is himself forced (1) to discount the importance of some texts and (2) to interpret others in a way that strains credulity. (shrink)