ONE COULD SAY THAT THE SCIENCE OF METAPHYSICS was born of Parmenides wondering how to divide being. His reasoning, namely that nothing belonging to being could divide it, and that nonbeing, since it in no way exists, cannot divide anything, set the terms of the problem within which the great Western traditions of Platonic and Aristotelian metaphysics developed. In reply to this Parmenidian challenge to divide being, Plato writes in the Sophist of the participation of being in the other, and (...) Aristotle in the Metaphysics of a pros hen equivocation of the name being. In response to the same seminal challenge to divide being, Thomas Aquinas speaks in the Quaestiones de veritate of modes of being and of modes of existing. Yet this terminology is barely acknowledged by Thomistic commentators. (shrink)

John Tomarchio - Aquinas's Concept of Infinity - Journal of the History of Philosophy 40:2 Journal of the History of Philosophy 40.2 163-187 Aquinas's Concept of Infinity John Tomarchio MUCH HAS BEEN WRITTEN of late about Aquinas's concept of divine infinity, but the attention given to his other metaphysical uses of the term 'infinite' has been peripheral -- sometimes to ill effect in the interpretation of his concept of divine infinity. The intent of this article is to offer an explication (...) of Aquinas's analogical concept of infinity. What Aquinas means when he calls beings or their principles infinite is sufficiently complex that it needs to be analyzed in its own right before his arguments for things' actually being infinite can be evaluated. There is no one place in his writings where Aquinas gives a full treatment of the various metaphysical senses of infinity, and so his view has to be reconstructed from the analysis of sundry texts in juxtaposition. As my intent is to reconstruct his overall theory, I will take up the relevant texts in a logical rather than historical order. I will first address the kind of relative infinity Aquinas predicates of certain principles of things, namely, the matter, form, and existence of finite beings, and then the kind of actual infinity he predicates of certain things, namely angelic substances and God. In the course of doing so, I will identify four global distinctions that run through all these.. (shrink)

The sequence is made up of select texts of the Aristotelian Organon, mostly the opening chapters of each treatise, in the traditional order, where Aristotle lays out the primary elements of reasoning. Study aids accompany these primary texts..." [taken from back cover].

This paper reports a procedure which I employed with two computational research instruments, the Index Thomisticus and its companion St. Thomas CD-ROM, in order to research the Thomistic axiom, ‘whatever is received is received according to the mode of the receiver.’ My procedure extends to the lexicological methods developed by the pioneering creator of the Index, Roberto Busa, from single terms to a proposition. More importantly, the paper shows how the emerging results of the lexicological searches guided my formation of (...) a philosophical thesis about the axiom’s import for Aquinas’s existential metaphysics. (shrink)

Aquinas held that the metaphysical consideration of beings as being consists in the consideration of being as created, i.e., the consideration of things in their complete reality, and the reduction of this complete reality to its complete cause. When existence displaces form as the primary sense of being, the thing’s act of existing is conceived of as ‘formal’ with respect to its essence. Consequently, the primary object of metaphysical consideration becomes the complete entity, a composite of essence and existence, and (...) the primary sense of being becomes the subsistence of the complete entity. In Aquinas’s creationist discourse, the term supposit denotes the concept of the entitative whole or complete entity. What this concept of the supposit adds to the Aristotelian conception of the concrete individual derives from the contingency of existence in every being beyond the first being. The subject of a nature and of categorical accidents is now also conceived of as the subject of a received act of existing. Aquinas reduces the distinctions of finite entities to their possession of acts of existing that are diverse absolutely, in virtue of a ‘privation’ of the fullness of existence, just as Aristotle reduces formal contrariety to the possession or ‘privation’ of differences that are diverse absolutely. And as Plato traced the negations constitutive of formal contrariety to a correlative participation between being and otherness, Aquinas analogously traced the distinctions of finite entities to a transcendental duality between participated existence and receiving essence. The necessary participation of each of these principles of finite being in divine and infinite existence constitutes the ultimate metaphysical reduction and horizon of a creationist metaphysics. (shrink)

In Summa theologiae, Ia, 75.5, Aquinas writes, "It is evident that all that is received in anything is received in it according to the mode of the receiver." Aquinas employs this principle throughout his career and across the full range of philosophical topics. Beginning with Quaestianes de veritate 2.5, he employs a more universal formulation which he applies even to divine being: "All that is in anything is in it according to the mode of that in which it is." As (...) modus is the term common to the principle's two formulations, I call it the modus principle. ;The dissertation is a comprehensive study of Thomas's use of the principle, based on computer research done with the Index Thomisticus and the St. Thomas CD-ROM. The 200 texts located are considered according to applications in the order of knowing, the order of being, and the order of predicating. In brief, Aquinas employs the modus principle and the term modus to give account of the intelligible coenactment in knowledge of the knower and the known; to give account of the entitative contrariety evident among beings; and to frame an analogy of being based on a primacy of existence. The principal conclusions drawn from the textual survey are that the modus principle belongs among the most basic axioms of Thomas's metaphysics, that it pertains directly to the metaphysical ultimate of his thought, namely esse, and that at the heart of the principle is a concept central to his metaphysics, namely modes of existence. ;When Aquinas subordinates formal contrariety to an actuality more ultimate than form, namely existence, a new concept of existential distinction emerges. Modus is a term of entitative contrariety that becomes necessary when a real duality of essence and existence is seen as necessary to all finite being. As Thomas traces this entitative composition to a participation in ipsum esse commune, and ultimately to a participation in ipsum esse per se subsistens, the term modus and the modus principle are seen to be in the service of his creationist metaphysics. (shrink)

Work translated by Vincent A. Guagliardo, Charles R. Hess, and Richard C. Taylor.