In lieu of an abstract, here is a brief excerpt of the content:THE STATUS AND FUNCTION OF DIVINE SIMPLENESS IN SUMMA THEOLOGIAE Ia, qq. 2-13 PETER BURNS, S.J. l esuit School of Theology Berkeley, California Introduction I N THE FIRST PART of what follows I hope to do four things: a) to give a brief summary of Aquinas's remarks contained in the third question of the first part of the Summa Theologiae, entitled de Dei simplicitate; b) to outline two diferent (...) ways of interpreting what Aquinas is about when making those remarks; c) to assess which interpretation is better from an exegetical standpoint; d) to assess which interpretation is better from a philosophical standpoint. In the second part my aim will be threefold : a) to trace the way Aquinas derives and uses the concept of divine simpleness in questions 2 through 11 ; b) to examine briefly the relationship between this concept and possible cosmological arguments for the existence of God; and c) to evaluate critically some modern treatments of arguments of the cosmological type in the light of this relationship. I shall not be concerned to show that Aquinas's conclusions in question 2 (the Five Ways) are justified by the arguments he adduces; rather, my concern will be to show that an adequate evaluation of his arguments cannot ignore the function of divine simpleness as a key element therein. I. The Status Of Divinle Simpleness (1) A Summary of S.T. la, 3 At the beginning of question 3 Aquinas lists eight points of inquiry. The first is whether God is a body, that is, composed 1 2 PETER BURNS, S.J. of extended parts. He offers three reasons why he thinks the reply must be negative. Firstly, an unchanging first cause of change, which God is (by la, 2, 3) would appear not to be bodily, since experience offers no examples of bodies causing change without themselves changing. Secondly, to be extended in space implies the potentiality of being divisible, but a primary reality is utterly actual, since absolutely speaking, actuality precedes po~ tentiality, and God is the primary reality. Thirdly, since the soul is nobler than inanimate things, and God is the most excellent of beings, God cannot be any less noble than the soul. But the soul in itself is not bodily but that in virtue of which bodies are what they are. In the next article Aquinas denies that God is composed of matter and form because matter is potential and only exists by participating in some form. In addition, since agents act in virtue of their form, God, as the prime source of activity and being in no way potential, must be considered as being essentially form without composition with matter, Aquinas then asks whether God can be identified with his own essence or nature. Given that matter is the individuating factor in beings composed of matter and form, and that such composition is ruled out in case of God, Aquinas claims that the distinctness of his being must be due to form. Hence God is his own form or nature or essence. In a crucial move in the next article Aquinas identifies God, who is his essence, with his existence, for as an uncaused necessary reality this essence must be self-subsistent. Thus God's nature or essence is necessarily self-instantiating, nor does God participate in existence, but essentially is identical with (the act of) 'existing', Therefore the distinction between essence and existence, between what something is and that it is, does not hold for God. Having daimed that God is his own existence, Aquinas argues that this existence is prior to genus in general and to the genus of substance specifically. So there is no possibility of distinguishing in God genus and difference, nor can God receive predicates as a substance, since this would imply potentiality. Therefore God is DIVINE SIMPLENESS IN SUMMA THEOLOGIAE 3 not composed of substance and accidents. In article 7, Aquinas claims that God is altogether simple. After summing up the previous remarks he makes two general points. Everything composite is subsequent to and dependent on its components, whereas God is the first, uncaused necessary being. Secondly, everything composite is caused, for essentially diverse elements must... (shrink)