This book provides a detailed, updated exposition and defense of five of the historically most important (but in recent years largely neglected) philosophical proofs of God’s existence: the Aristotelian, the Neo-Platonic, the Augustinian, the Thomistic, and the Rationalist. It also offers a thorough treatment of each of the key divine attributes—unity, simplicity, eternity, omnipotence, omniscience, perfect goodness, and so forth—showing that they must be possessed by the God whose existence is demonstrated by the proofs. Finally, it answers (...) at length all of the objections that have been leveled against these proofs. This work provides as ambitious and complete a defense of traditional natural theology as is currently in print. Its aim is to vindicate the view of the greatest philosophers of the past— thinkers like Aristotle, Plotinus, Augustine, Aquinas, Leibniz, and many others— that the existence of God can be established with certainty by way of purely rational arguments. It thereby serves as a refutation both of atheism and of the fideism that gives aid and comfort to atheism. (shrink)

Edited and introduced by Robert Arp, _Revisiting Aquinas’ Proofs for the Existence of God_ is a collection of new papers written by scholars focusing on the famous Five Proofs or Ways for the existence of God put forward by St. Thomas Aquinas near the beginning of his unfinished tome, _Summa Theologica_.

Edited and introduced by Robert Arp, _Revisiting Aquinas’ Proofs for the Existence of God_ is a collection of new papers written by scholars focusing on the famous Five Proofs or Ways for the existence of God put forward by St. Thomas Aquinas near the beginning of his unfinished tome, _Summa Theologica_.

Some will wonder why this book was ever written, thinking perhaps that there is nothing more to be said about "proofs" for the existence of God. Others of a more traditional inclination might be surprised at some of the conclusions drawn by the author. Kenny carefully scrutinizes the five ways of St. Thomas and concludes that they do not constitute rational proofs for God's existence. Kenny's chief criticism is that the arguments of Aquinas are too closely (...) wedded to a cosmology that cannot stand up under a modern critique. The value of this book rests precisely in its use of contemporary philosophy in evaluating the five ways. Perhaps the author's most serious criticism is directed against the Thomistic concept of esse and the notion of God as ipsum esse subsistens. These metaphysical notions of Aquinas have long been acclaimed as extensions of Aristotelian thought. Kenny, however, claims that they are Platonic in nature and hence subject to the centuries of criticism leveled against Plato's Ideas. Under a logical analysis, the notion of God as ipsum esse subsistens "turns out to be the Platonic Idea of a predicate which is at best uninformative and at worst unintelligible."--J. J. R. (shrink)

Aquinas’s name is practically synonymous with attempts at proving the existence of God. In this article I offer an interpretation and defense of a much neglected argument from Aquinas’s works, that of De Ente et Essentia Cap. IV. Therein Aquinas presents quite a youthful and in my view compelling argument for the existence of God. To begin with, I present an interpretation of the argument and on the basis of this interpretation I suggest that the argument has a (...) prima facie plausibility to it. Thereafter I consider several criticisms that are relevant to the argument, yet not compelling in my view. I conclude that the argument from the De Ente survives the criticisms leveled against it in this paper, in which case if one accepts the methodological framework that Aquinas adopts, then one ought to accept that Aquinas’s argument for God in the De Ente succeeds in what it sets out to do: to establish the existence of a single, immaterial, self-subsisting act of being, which we understand to be God. (shrink)

‘The Five Ways’ has been used as a translation of the phrase quinque viae which is used by Aquinas in Summa Theologiae I, 2, 3. I have put it in inverted commas because I think that it is a poor translation of the Latin. Aquinas’s use of the word via is sufficiently rich to confront us with a choice of English equivalents. There is no reason why in this context we should opt for ‘way’. Since we are not being (...) invited in ST I, 2, 3 on any journey in space, the initial presumption must be that ‘way’ should be used only if we fail to turn up anything more fitting. However, there is no difficulty in providing a more suitable English equivalent. Via is used by Aquinas in the sense of ‘a method of arguing’ or, more specifically, as designating particular arguments. When he considers the two viae by which Aristotle arrived at a certain conclusion, Aquinas clearly distinguishes an argument based on Physics VII from that based on Physics VIII. And in the same context Aquinas uses rationes as an equivalent of viae. Ratio is frequently used by Aquinas in the sense of the English word ‘argument’, as, for instance, in ST I, 30, 2 or ST III, 55, 5. Hence it seems to me that quinque viae should be translated as ‘five arguments’. (shrink)

Aquinas’s name is practically synonymous with attempts at proving the existence of God. In this article I offer an interpretation and defense of a much neglected argument from Aquinas’s works, that of De Ente et Essentia Cap. IV. Therein Aquinas presents quite a youthful and in my view compelling argument for the existence of God. To begin with, I present an interpretation of the argument and on the basis of this interpretation I suggest that the argument has a (...) prima facie plausibility to it. Thereafter I consider several criticisms that are relevant to the argument, yet not compelling in my view. I conclude that the argument from the De Ente survives the criticisms leveled against it in this paper, in which case if one accepts the methodological framework that Aquinas adopts, then one ought to accept that Aquinas’s argument for God in the De Ente succeeds in what it sets out to do: to establish the existence of a single, immaterial, self-subsisting act of being, which we understand to be God. (shrink)

Aquinas’s name is practically synonymous with attempts at proving the existence of God. In this article I offer an interpretation and defense of a much neglected argument from Aquinas’s works, that of De Ente et Essentia Cap. IV. Therein Aquinas presents quite a youthful and in my view compelling argument for the existence of God. To begin with, I present an interpretation of the argument and on the basis of this interpretation I suggest that the argument has a (...) prima facie plausibility to it. Thereafter I consider several criticisms that are relevant to the argument, yet not compelling in my view. I conclude that the argument from the De Ente survives the criticisms leveled against it in this paper, in which case if one accepts the methodological framework that Aquinas adopts, then one ought to accept that Aquinas’s argument for God in the De Ente succeeds in what it sets out to do: to establish the existence of a single, immaterial, self-subsisting act of being, which we understand to be God. (shrink)

Without doubt, St Thomas Aquinas was the greatest of the medieval philosophers. Aquinas was a prolific writer and he made contributions to virtually every area of Philosophy and Theology. His account of the existence of God is perhaps the best known aspect of his work. This is especially true of the celebrated five arguments he adduced in demonstration of the existence of God. In exploring Aquinas’ Five ways, which some commentators regard as Aquinas’ substantive contribution (...) to Philosophy of religion, our contention is that they demonstrate the possibilities as well as the limits of natural theology, so far as while Aquinas does not deny that natural reason can establish the existence of God he nonetheless maintains that there are aspects of God’s nature that can be known only through the means of divine revelation. Consequently unless we take into account the double emphasis on the possibilities and limits of natural theology, we are sure underestimate the contemporary relevance of Aquinas’ Five ways. -/- . (shrink)

RESUMO: O objetivo deste artigo é examinar o que entendemos ser uma prova original da existência de Deus na obra de Pierre Duhem. Cremos que a originalidade dessa prova consiste especialmente nas premissas usadas pelo filósofo. Quanto à forma, a mesma assemelha-se ao conhecido argumento do desígnio, mas a sua versão se caracteriza por buscar na história das teorias físicas a matéria da qual a existência de uma Providência é derivada. É a complexa evolução das teorias e, a despeito dela, (...) a sua espantosa progressividade em direção a estágios sempre mais perfeitos que servem de premissa para a via duhemiana de acesso a Deus. Tudo se passa como se houvesse uma suposta pré-ordenação divina do curso das teorias, uma finalidade intrínseca a ele. ABSTRACT: The aim of this paper is to examine what we believe to be an original proof of the existence of God in the work of Pierre Duhem. We think that the originality of this proof consists especially in the assumptions used by the French philosopher in his argumentation. Regarding the form, it resembles the well-known design argument, but his version is characterized by seeking in the history of physical theories the matter from which the existence of a Providence is derived. It is the complex evolution of theories and, despite it, its amazing progress towards ever more perfect theories that serves as the premise for Duhem's way of access to God. Everything goes as if it had been a divine preordainment and an intrinsic goal ruling the evolution of theories. (shrink)

This chapter contains sections titled: The First Way – The Argument from Motion The Second Way – The Argument from Causation The Third Way – The Argument from Possibility and Necessity The Fourth Way – The Argument from Gradation The Fifth Way – The Argument from the Governance.

This five-step metaphysical proof borrows from the metaphysical thought of Aquinas as well as from Bernard Lonergan’s proof of God in Insight. It makes several advances to proofs of God. Most importantly, by showing that an unconditioned reality must be unrestrictedly intelligible, the second step of the proof is original and lays a stronger foundation than previous proofs for the uniqueness of an unconditioned reality as well as its identification with an unrestricted act of thinking. This point strengthens the (...) argument that this unique reality is a creator of everything else in reality. In so doing, it responds to contemporary criticisms of proofs of God by Richard Dawkins and others. This proof also adapts metaphysical ideas and terms to those arising out of the contemporary scientific world view, so that it is relevant and applicable to quantum and relativity theory, quantum cosmology, and other contemporary cosmological ideas, such as a multiverse and multidimensional physical realities. (shrink)

Does God exist? What are the various arguments that seek to prove the existence of God? Can atheists refute these arguments? The Existence of God: A Philosophical Introduction assesses classical and contemporary arguments concerning the existence of God: the ontological argument, introducing the nature of existence, possible worlds, parody objections, and the evolutionary origin of the concept of God the cosmological argument, discussing metaphysical paradoxes of infinity, scientific models of the universe, and philosophers’ (...) discussions about ultimate reality and the meaning of life the design argument, addressing Aquinas’s Fifth Way, Darwin’s theory of evolution, the concept of irreducible complexity, and the current controversy over intelligent design and school education. Bringing the subject fully up to date, Yujin Nagasawa explains these arguments in relation to recent research in cognitive science, the mathematics of infinity, big bang cosmology, and debates about ethics and morality in light of contemporary political and social events. The book also includes fascinating insights into the passions, beliefs and struggles of the philosophers and scientists who have tackled the challenge of proving the existence of God, including Thomas Aquinas, and Kurt Gödel - who at the end of his career as a famous mathematician worked on a secret project to prove the existence of God. The Existence of God: A Philosophical Introduction is an ideal gateway to the philosophy of religion and an excellent starting point for anyone interested in arguments about the existence of God. (shrink)

The six articles that comprise Book 2, Distinction 1, Question 1 of Aquinas' Writings on the "Sentences" of Peter Lombard represent his earliest and most succinct account of creation. These texts contain the essential Thomistic doctrines on the subject, and are here translated into English for the first time, along with an introduction and analysis. In Article One Aquinas argues, against Manichean dualism, that there is one ultimate cause of all created being; in so doing he gives three proofs for (...) the existence of the Creator and the essential features of his answer to the problem of evil. Thomas establishes his definition of creation in Article Two, providing the needed distinctions between philosophical and theological senses of creation. Emanationism and the problem of whether there can be any intermediary causes in God's act of creation are the subject of Article Three. The next article demonstrates that although God is the cause of all created being, nevertheless creatures are true causes in nature. Article Five argues that it is from revelation alone that we know that the world had a temporal beginning, and that the philosophical arguments that purport to show either the necessity or impossibility of the temporal beginning are not persuasive. A detailed exposition of the meaning of the first sentence of the Bible, "In the beginning God created the heavens and the earth," follows in Article Six. (shrink)

The aim of the book is to show that the ’five ways’ of Thomas Aquinas, i.e., his five arguments to prove the existence of God, are logically correct arguments by the standards of modern predicate logic. In the first chapter this is done by commenting on the two preliminary articles preceding the five ways in which Thomas Aquinas points out that on the one hand the existence of God is not self-evident to us (...) and on the other hand, that, similar as in some scientific explanations, the mere existence of a cause for an effect which is evidently known to us can be proved. In the second chapter every argument is translated into the symbolic form of predicate logic and its logical validity is shown. Additionally a detailed and critical discussion of the premises of each argument is given. (publisher). (shrink)

The aim of the book is to show that the Five Ways of Thomas Aquinas, i.e. his five arguments to prove the existence of God, are logically correct arguments by the standards of modern Predicate Logic. In the first chapter this is done by commenting on the two preliminary articles preceeding the Five Ways in which Thomas Aquinas points out that on the one hand the existence of God is not self-evident to us (...) and on the other hand, that, similar as in some scientific explanations, the mere existence of a cause for an effect which is evidently known to us can be proved. In the second chapter every argument is translated into the symbolic form of Predicate Logic and its logical validity is shown. Additionally a detailed and critical discussion of the premises of each argument is given. (shrink)

This paper examines critically Kretzmann's reconstruction of the project of natural theology as exemplified by Aquinas's Summa Contra Gentiles. It is argued that the notion of natural theology, as understood and advocated by Kretzmann, is particularly indebted to the epistemologically biased natural theology of modernity with its focus on rational justification of theistic belief. As a consequence, Kretzmann's view of the arguments for the existence of God and their place within Aquinas's theological project is insufficiently sensitive (...) to the ontological conception of truth and intelligibility which underlies the argumentation. From his epistemological point of view Kretzmann differs from Aquinas in two aspects. First, he contends that it is not necessary to establish the existence of God with absolute certainty at the outset; one may begin with the hypothesis that there is a God. Second, the arguments do not yet conclude to the existence of God in the specific theistic sense; they show at most the existence of a primary explanatory entity, which may be identified with God later on. Both claims are criticized in the light of a discussion of Aquinas's theological method. (shrink)

In the Summa Theologia I, beginning at question 2, article 3, and in the Summa Contra Gentiles I, beginning at chapter 13, Aquinas provides five proofs for the existence of God. These proofs are intended to demonstrate that God exists and to provide the foundation for a larger program to demonstrate many other doctrines which are held by faith. However, the program which Aquinas sets up for himself in the two great Summae is trivial and unnecessary if the (...) existence of God is self-evident in such a way that God's existence needs no demonstration. So, as a preamble to the five ways, Aquinas argues that the existence of God is not self-evident in any way that would hinder his program of rational theology.In STI the argument occurs in question 2, article 1, and in CGI it occurs in chapters 10 and 11. Aquinas also argues the same point in Commentum in Primum Librum Sententiarum distinction 3, question 1, article 2, and in Quaestiones Disputate De Veritate question 10, article 12. (shrink)

This essay discusses and criticizes Richard Swinburne's inductive argument for the existence of God. In his The Existence of God, Swinburne aims at showing that the existence of God is more probable than not. This is an argument taking into consideration the premises of all traditional arguments for the existence of God. Swinburne uses the phenomena and events that constitute the premises of these arguments as evidence in an attempt to show that his hypothesis (...) is more probably true than nor. Swinburne pursues this task by way of applying Bayes' theorem. The aim of this essay is normative - to judge the strength of Swinburne's argument for the existence of God. My primary objections towards Swinburne is that he professes a subjective concept of probability, that he relies too heavily on simplicity as a virtue of plausible and probable hypotheses and that his concept of God involves an incoherent picture of God's nature. I question not only the actual success of Swinburne's project but what his argument, if it had been successful, would have been able to establish. (shrink)

This paper will argue that the order and the unity of St. Thomas Aquinas’s five ways can be elucidated through a consideration of St. Thomas’s appropriation of an Avicennian insight that he used to order and unify the wisdom of the Aristotelian and Abrahamic philosophical traditions towards the existence of God. I will begin with a central aporia from Aristotle’s Metaphysics. Aristotle says that the science of first philosophy has three different theoretical vectors: ontology, aitiology, and theology. But (...) how can all three be united into a single Aristotelian science? In his Metaphysics of the Healing, Avicenna resolved the impasse by taking the ontological vector as the subject of metaphysics. He then integrated the question of the four first causes into the penultimate stage of his demonstration for the existence of God, thereby placing aitiological and theological questions among the ultimate concerns of a unified Aristotelian metaphysics. In the five ways, St. Thomas integrated Avicenna’s Aristotelian search for the first four causes into the last four of his five ways, by showing that each of the four aitiological orders terminate in an ultimate first cause that we call God. Finally, by appending the proof from the Physics to the beginning of the five ways, St. Thomas was able to show that the ultimate aim of both natural philosophy and metaphysics is the divine first principle, which is the beginning and subject of sacra doctrina. (shrink)

The efforts to prove God's existence in the history of thought have been one of the fundamental problems of philosophy and theology, and even the most important one. The evidences put furword to prove the existence of God constitute the center of philosophy of religion’s problems not only philosophy of religion, but also the disciplines such as theology-kalam and Islamic philosophy are also seriously concerned. When we look at the history of philosophy, it is clear that almost all (...) philosophers are interested in the evidence in favour of and against the existence of God. Especially in recent times, religious experience has often been regarded as evidence of the existence of God. Studies in the field of religious and mystical experience have put forward many arguments concerning the use of religious experience as evidence. However, this study has been limited to experience of sense and pure consciousness claims rather than examining all of these arguments. In this study firstly, the analogy between experience of sense and religious experience will be deal with, and then claims that conciousness can be emptied by a number of methods which are defended by mystics. In addition, it will be tried to defend the opinion that the mystical experiences which are the common point of the two approaches are valid. The main emphasis of the article will be that these arguments can be used as evidence for the existence of God.Summary: Religious experience - which has not been considered as one of the classical evidences regarding the existence of God before being popular by recent studies – is started to be called one of the arguments. The most important reason for not arguing religious experience among the evidences of God’s existence is that it is a personal experience and therefore contains subjective perspectives. However, many researchers, who refuse to accept the criticism raised against religious experience with restricting to subjectivity, emphasized the importance of religious experience by highlighting the objective aspects of such experiences. This emphasis was not only on its significance, but also on the fact that it had a cognitive feature and thus it could provide evidence for the existence of God. The argument of religious experience is generally defined as an effort for demonstrating to existence of God with reference to several feelings such as spiritual experiences of human in face of creator and sacred Being, encounter with God, uniting, and annihilating selfness in Him. The emergence of such efforts, especially after the XVIIIth century, indicates that the history of the evidence does not go back much earlier. However, even if notas evidence, it is possible to extend the traces of religious and mystical experience to the history of religions such as Buddhism and Hinduism. Considering a great amount of the previous literature focused on religious experience in the West, It is easily seen that such research is still new. The main purpose in addressing such a controversial issue is to make the argument on the religious experience more current and to show whether the religious experience would be able to use as evidence for the existence of God.First title of this study comprises many different claims such as Walter T. Stace’s The Argument from Unanimity Richard Swinburne’s The Principle of Credulity, William P. Alston’s Perceiving God, John Hick’s Experience-as. However, instead of briefly giving out very different claims, the study chooses to focus on two arguments which are less discussed and can be given in more detail. The first is the argument based on the analogy between the religious experience and the sense experience. The fundamental point of this argument is sense experience. With reference to the similarities between the sense experience and the religious experience, it can be argued that religious experience is also cognitive and may function as an evidence for the existence of God. In other words, being perceptual and noetic, namely cognitive, of sense experience is addressed as a similar side of religious experience. Whether it is imaginary or real, eventually, it is necessary for an experience to have an object and being experience of something. Therefore, the religious experience includes the perception of a Transcendent Being that is beyond and in excess of the individual who experiences. Perception of the sense experience will definitely be different from the perception of religious experience. Researchers who think that the five sense organs do not run the perception of Sacred Beings, identified broader and various meanings for the perception. Thereby, in this approach, where the semantic field of perception is expanded, it was contended that human beings were able to perceive the transcendent, eternal, and unlimited God, and this can be explained in the epistemological sense. In order to use religious experiences as an evidence for the existence of God, it is necessary to determine whether such experiences are caused by God rather than something else. This raises the issue of the validity of religious experience. The researchers in this area have propounded various criteria to identify whether religious experience is existed or not. Experiences, which do not meet the criteria, are not considered existed even if they claim to be religious experience.The second is the argument that discusses whether it is possible to suggest an evidence for the existence of God by utilizing pure consciousness events. In general, this argument claims that the consciousness gets clear, and thus, mystic or Sufi experiences the Divine One with pure consciousness by discharging consciousness from all sensual contents and removing it from secular desire and wishes. The argument, which claims the experience of Divine One is direct, therefore uninterpretable, and experienced by pure consciousness, believes clearing the consciousness of mystics from sensual qualities such as seeing, hearing, and tasting. It is stated that it is possible for mystics to empty their sensory images and get rid of them, and thus, their desires and wishes could be lost. Especially, the thinkers who are connected with the philosophy of perennialism and defend this approach, thought that people, who have distinct religion, culture, and beliefs in different parts of the world and in various time periods, had the same experience and considered such experiences were universal by suggesting that this similarity could be called as common essence.Even though the claim which offers that the events of pure consciousness are the same everywhere have been criticized in many respects, the advocates of this approach have argued that the experience has the common essence, but the interpretation is different. This relationship, which was tried to be established between experience and commentary, caused a lot of work for both the thinkers who put forward the claims of pure consciousness and the researchers who opposed it. However, examining the relationship between experience and interpretation requires serious studies in socio-psychological, cultural and religious fields. Therefore, in order not to exceed the limits of the article, the relationship between experience and interpretation is briefly mentioned.While discussing two arguments, the main claims of the arguments were addressed, and the criticisms directed to this argument were not discussed as much as possible. However, some fundamental criticisms have been mentioned shortly for a better understanding of the discussion. Since such western-oriented claims mostly were deployed in a western context, the study excluded the comparison of the claims across different cultures. (shrink)

Einstein argued in his latter years that the intelligibility of the world was in the nature of a miracle, and that in no way could one have expected a priori such a high degree of order; this is why he rejected the atheist, positivist standpoint, and believed in a Spinozist God. Einstein's argument, however, is essentially a form of the ?argument from design? for a personal God based on the existence of beautiful, mathematically simple laws of nature; that physical (...) order is a unique, improbable alternative compared to the infinite number of chaotic universes that might have existed. Einstein, in his early manhood, was a Humean, but in later years, as he moved toward Spinoza, from phenomenalism to noumenalism, he clearly rejected Hume's restriction of probable inferences to observed sequences. Darwin's arguments against biological design did not apply to Einstein's argument, because the laws of physics are not the outcome of any cumulative struggle for existence and natural selection. Perhaps the beautiful simplicity of basic physical laws helps account for the fact that relatively more physicists than biologists or psychologists hold to a theistic standpoint. Einstein's finite universe would have seriously weakened the argument that life, though infinitely improbable, would have been realized in an infinite world. But in any case, Einstein would have regarded ?emergence? theories of life as irrational. In accordance with the principle of identity of Emile Meyerson, the epistemologist whom he most respected, it would have followed that the occurrence of consciousness and intelligence was grounded in a God with those attributes, and that theism was consequently the basis for scientific knowledge. (shrink)

In this article I outline two epistemological theistic arguments. The first one starts from the dilemma between our strong conviction that we possess some knowledge of the world and the belief that there are some serious reasons which undermine it. In my opinion theism opens the possibility of the way out of the dilemma. The second argument depends on the premise that in every time every worldly thing is actually perceived or known. I support it by four considerations and (...) claim that the simplest explanation of the epistemic ‘non-loneliness’ of the world is the existence of the Supreme Cogniser. (shrink)

1. The relationship established between God and possibility on the one hand and the aspect of realization on the other is, in a way, an explication of the Aristotelian position. Though Professor Weiss does not proceed along strict Aristotelian lines--in view of the fact that he does not put forth the doctrine that realization has to precede possibility--he still holds an Aristotelian view in the sense that for him possibility has no self-sufficient, independent ontological status, but must find its supplement (...) and complement in reality--in this context, in God. (shrink)

In this paper, I describe the way in which I introduce arguments for the existence of God to undergraduate students in Introduction to Philosophy.

At present a broad consensus may be discerned on Aquinas' ‘five ways' for proving the existence of God: either he is responding to atheism per se by means of five rational arguments, or he is not responding to any formal denial of God's existence. Both of these approaches ignore the two specific objections Aquinas raises prior to the five ways: evil is incompatible with the existence of an infinite goodness , and the world (...) does not require an external explanation . While some have speculated on the structural significance of the second objection, the first has been universally regarded as irrelevant. This, I argue, is an oversight; Aquinas' first objection is central to the quinque viae. Seen in this light, while Aquinas' five ways are not responses to atheism per se, they do address, and ultimately subvert, a specific form of disbelief. (shrink)

I have two main goals in this paper. The first is to argue for the thesis that Kant gave up on his highest good argument for the existence of God around 1800. The second is to revive a dialogue about this thesis that died out in the 1960s. The paper is divided into three sections. In the first, I reconstruct Kant’s highest good argument. In the second, I turn to the post-1800 convolutes of Kant’s Opus postumum to discuss his (...) repeated claim that there is only one way to argue for the existence of God, a way which resembles the highest good argument only in taking the moral law as its starting point. In the third, I explain why I do not find the counterarguments to my thesis introduced in the 1960s persuasive. (shrink)

The paper deals with the "deuteros plous", literally ‘the second voyage’, proverbially ‘the next best way’, discussed in Plato’s "Phaedo", the key passage being Phd. 99e4–100a3. The second voyage refers to what Plato’s Socrates calls his “flight into the logoi”. Elaborating on the subject, the author first (I) provides a non-standard interpretation of the passage in question, and then (II) outlines the philosophical problem that it seems to imply, and, finally, (III) tries to apply this philosophical problem to the "ultimate (...) final proof" of immortality and to draw an analogy with the ontological argument for the existence of God, as proposed by Descartes in his 5th "Meditation". The main points are as follows: (a) the “flight into the logoi” can have two different interpretations, a common one and an astonishing one, and (b) there is a structural analogy between Descartes’s ontological argument for the existence of God in his 5th "Meditation" and the "ultimate final proof" for the immortality of the soul in the "Phaedo". (shrink)

This slender volume is a polemical work on two fronts. First and foremost, it is an attempt to distinguish sharply the aim of Aquinas from that of post-Cartesian rationalism with respect to the role of philosophical argumentation in establishing the existence of God. Cartesian rationalism holds that it is possible to articulate presuppositionless, universal, compelling, and purely philosophical reasons to justify a foundational belief in God. Velecky criticizes this view on Wittgensteinian grounds and holds that there are significant affinities (...) between Aquinas and Wittgenstein on the relationship between religious belief and philosophical justification. What counts as a good philosophical case for the existence of God is always relative to the existential situation of the inquirer. So-called proofs for the existence of God are really attempts to formulate corroborating intellectual grounds for a belief that one has already come to on the basis of God's self-revelation, faith, and personal encounter. Belief in the proposition "that God exists" is not a statement reporting the existence of an item encounterable in our normal experience or the conclusion of an argument, but rather expresses the adoption of an entirely distinct perspective on the whole of reality. So when Aquinas describes arguments for the existence of God as preambula fidei, he does not mean that they are prior to faith as epistemologically necessary conditions for belief, but rather that they are logically required by faith in a different sense. It must be possible to locate or refer to the object of religious belief within a universe of philosophical discourse; or, to put it another way, it must be possible to give some content to the notion of divinity. The function of Aquinas's arguments is thus to make the proposition Deum esse intelligible within the universe of broadly Aristotelian discourse. This is especially important if believers want to have any kind of conversation with nonbelievers. Velecky writes: "At the conclusion of the Five Arguments nothing more--and nothing less--has been achieved than that a reasonable philosophical case has been made for a topic of conversation between Christians and others about the basic characterization of something which is thought to be the transcendent cause of all beings and which has left some traces of its transcendence in the world we can experience". Velecky's Wittgensteinian reading of Aquinas is a welcome antidote to the more usual Cartesian reading. But while Velecky is careful to distinguish Aquinas from Wittgensteinian fideism, nevertheless his overall strategy comes dangerously close to pushing Aquinas too far in that direction; Aquinas is neither Cartesian nor Wittgensteinian. (shrink)

Prompted by questions raised in the public arena concerning the validity of arguments for the existence of God based on “design” in the universe, I explore a traditional teleological argument for the existence of God. Using the arguments offered by Thomas Aquinas as fairly representative of this classical line of argumentation going back to Aristotle, I attempt to uncover the hidden premises and construct arguments for the existence of God which are deductive in nature. (...) To justify the premises of Aquinas’s argument, I begin by presenting an argument to justify the existence of “final causes,” with a focus on answering questions about the biological implications of these causes for evolutionary theory. Then, I attempt to construct two teleological proofs for the existence of God. Finally, I offer some implications of this reasoning for the contemporary disputes over ID/evolution in education. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Metaphysics of Theism: Aquinas’s Natural Theology inSumma contra gentiles I by Norman KretzmannJohn F. WippelNorman Kretzmann. The Metaphysics of Theism: Aquinas’s Natural Theology in Summa contra gentiles I. Oxford: Clarendon Press, 1997. Pp. xii + 302. Cloth, $45.00.In this book Kretzmann intends to contribute to our understanding of Aquinas’s natural theology as it is presented in Bk I of his Summa contra gentiles(SCG). He hopes that it (...) will be of value to medieval philosophical scholarship. Because he regards Aquinas’s natural theology as an ongoing active enterprise, he also wants to present a viable metaphysics of theism along the lines laid down by the medieval Doctor. Thomas himself indicates that in Bks. I–III of the four Books of this work he will set forth those aspects of Christian belief about God which can be established by unaided human reason. Kretzmann views Aquinas’s project in these three Books as the most promising and “most fully accomplished natural theology” of which he is aware.In ch. 1 Kretzmann discusses the relationship between philosophy and theology and suggests that a philosophical theology might be regarded as theology from the top down. Philosophy from the bottom up would seem to be the only kind of philosophy that can be distinguished from it. Kretzmann mentions the “philosophical theology” produced by many medieval theologians and by current philosophers of religion but, in a departure from Aquinas’s own terminology, regards this as a part of revealed theology. Kretzmann reserves the name “natural theology” for the theology that is a part of philosophy, and refers to it as theology from the bottom up. But, he suggests, if one were to take a metaphysically grounded natural theology as the first phase in a systematic presentation of the rest of philosophy, one could then refer to philosophy as proceeding from the top down, i.e., from an original demonstration of the existence of God and discussion of his nature to an examination of created reality and human nature and behavior as following from God as the first principle. It is this approach that he finds Thomas following in SCG I–III and which Kretzmann will subsequently refer to as his “natural theology.”In ch. 2 Kretzmann examines Thomas’s efforts in SCG I, c. 13 to demonstrate God’s existence. He thinks Aquinas is too demanding in requiring demonstrative argumentation for God’s existence at this point. For Rretzmann it will be enough initially to offer argumentation to show that the existence of God is an acceptable working hypothesis, and to move from this to an investigation of the divine nature. Thomas offers five a [End Page 528]posteriori arguments for God’s existence in c. 13, of which the first two, by far the lengthiest, are based on motion and deeply indebted to Aristotle. Kretzmann notes the close relationship between this first argument from motion and the later “first way” of Summa theologiae1, 2, 3. But because this argument has been ably analyzed and defended by Scott MacDonald, Kretzmann unfortunately bypasses it here and concentrates on the more complicated second argument. After submitting this to close analysis, he concludes that it has some fatal flaws which prevent it from being accepted as demonstrative.This result forces him in ch. 3 to move forward in his presentation of Thomas’s natural theology without having a conclusive argument for the existence of God or even of an extraordinary first being. But he is willing to use its conclusion, that there is an ultimate explanatory principle, as a working hypothesis, even though at this point he is not ready to identify this with even a hypothetically existing God. Instead, he will refer to it as “Alpha.” He follows Thomas’s employment of the way of negation in cc. 14–28 in removing a series of names that should not be predicated of God. As part of his effort in c. 15 to prove that God is eternal, Aquinas introduces a special argument based on the difference between possible (=corruptible) and necessary (=incorruptible) beings. Kretzman correctly takes this as in effect another argument for the existence of God... (shrink)

The nature of Kant’s criticism of his pre-Critical ‘possibility proof’ for the existence of God, implicit in the account of the Transcendental Ideal in the Critique of Pure Reason, is still under dispute. Two issues are at stake: the error in the proof and diagnosis of the reason for committing it. I offer a new way to connect these issues. In contrast with accounts that locate the motivation for the error in reason’s interest in an unconditioned causal ground of (...) all contingent existence, I argue that it lies in reason’s interest in another kind of unconditioned ground, collective unity. Unlike the conception of the former, that of the latter directly explains the problematic ontological assumption of the possibility proof, the existence of intelligible objects as the ground of possibility. I argue that such Platonic entities are assumed because they are amenable to the kind of unity prescribed by reason. However, since the interest in collective unity has a legitimate regulative use when applied to the systematic unity of nature, the conception of God entailed by the possibility proof is retained as a regulative idea of reason. (shrink)

A number of recent discussions of atheism allude to cosmological arguments in support of theism. The five ways of Aquinas are classic instances, offered as rational justification for theistic belief. However, the five ways receive short shrift. They are curtly dismissed as vacuous, arbitrary, and even insulting to reason. I contend that the atheistic critique of the Thomistic five ways, and similarly formulated cosmological arguments, argues at cross purposes because it misrepresents them. I first lay (...) out the context, intent and structure of Aquinas’ arguments, then show in what way recent discussions misrepresent them, and finally conclude with a comment on metaphysical orientation, which I take to be central, not only to a proper understanding of the Thomistic five ways but generally to the debate between atheism and theism on the existence of God. (shrink)

This article examines a somewhat neglected argument for the existence of God which appeals to the divine perspective as a way of reconciling the conflicting claims of realism and anti-realism. Six representative examples are set out (Berkeley, Ferrier, T. H. Green, Josiah Royce, Gordon Clark and Michael Dummett), reasons are considered why this argument has received less attention than it might, and a brief sketch given of the most promising way in which it might be developed.

In order to understand the importance of the demonstrations of God‟s existencein the second quaestio of the Summa Theologiae, we need to follow theguidelines of interpretation that Aquinas himself provides in the chaptersprevious to the account of the five ways.1Otherwise we cannot understand thetext properly. Indeed, we naturally expect universal validity and necessity froman argument labeled as a proof. But things are not as simple as that in the SummaTheologiae. In this paper, I would like to argue that, in (...) order to evaluate thedemonstrations of God‟s existence in the Summa Theologiae, it is necessary tounderstand the idea of scientia, which Aquinas develops in his commentary onAristotle‟s Posterior Analytics. Helpful for my reasoning was John I. Jenkins,Knowledge and Faith in Thomas Aquinas.2In a further step, I would like to turnto the principle of any scientia, the intellect, and elaborate how Aquinas's wholemetaphysics of being can serve as a proof of God's existence. (shrink)

In this paper, I present main theses of Aquinas Way to God: The Proof in the De Ente et Essentia by Gaven Kerr. The book in question is a contemporary interpretation and defence of Thomas Aquinas’s argument for the existence of God, based on the real distinction between the essence of the thing and its act of being. I stress the fact that Kerr underlines the metaphysical character of Thomas’s argument and the role of participation in Aquinas’s understanding of (...) the act of being. In the last part of the article, I discuss Kerr’s interpretation of Aquinas’s argument for the real distinction between essence and an act of being, as well as Kerr’s own argument. These arguments are of particular importance since they provide metaphysical presuppositions for the argument for God’s existence considered in Kerr’s book. As for the first argument, I argue that the first part of Aquinas’s argumentation pertains to the real order rather than conceptual. Concerning the second argument, I attempt to highlight the difficulties of Kerr’s understanding of Thomist esse as a principle of the existence of a thing. (shrink)

Written by a highly respected scholar of Thomas Aquinas's writings, this volume offers a comprehensive presentation of Aquinas's metaphysical thought. It is based on a thorough examination of his texts organized according to the philosophical order as he himself describes it rather than according to the theological order. -/- In the introduction and opening chapter, John F. Wippel examines Aquinas's view on the nature of metaphysics as a philosophical science and the relationship of its subject to divine (...) being. Part One is devoted to his metaphysical analysis of finite being. It considers his views on the problem of the One and the Many in the order of being, and includes his debt to Parmenides in formulating this problem and his application of analogy to finite being. Subsequent chapters are devoted to participation in being, the composition of essence and esse in finite beings, and his appeal to a kind of relative nonbeing in resolving the problem of the One and the Many. Part Two concentrates on Aquinas's views on the essential structure of finite being, and treats substance-accident composition and related issues, including, among others, the relationship between the soul and its powers and unicity of substantial form. It then considers his understanding of matter-form composition of corporeal beings and their individuation. Part Three explores Aquinas's philosophical discussion of divine being, his denial that God's existence is self-evident, and his presentation of arguments for the existence of God, first in earlier writings and then in the "Five Ways" of his Summa theologiae. A separate chapter is devoted to his views on quidditative and analogical knowledge of God. The concluding chapter revisits certain issues concerning finite being under the assumption that God's existence has now been established. -/- John F. Wippel, professor of philosophy at The Catholic University of America, was recently awarded the prestigious Aquinas Medal by the American Catholic Philosophical Association. In addition to numerous articles and papers, Wippel has coauthored or edited several other works, including Metaphysical Themes in Thomas Aquinas and The Metaphysical Thought of Godfrey of Fontaines, both published by CUA Press. (shrink)

In his?Proslogion?, Anselm presents a proof for God?s existence which has attracted a tremendous amount of scholarly attention. In spite of all that has been said about this proof and proofs for God?s existence more generally, scholarly consensus seems to dissipate when it comes to determining whether theistic proofs are persuasive and sound. In this article, I will argue that there is a way to provide compelling proof for the existence of God. To substantiate this claim, I (...) will not attempt to prove that God exists apart from His revelation in any of the ways that have been advocated by various philosophers of religion. Rather, I will endeavor to explain that Anselm?s approach to offering evidence for God?s existence is quite different from the approach that modern philosophers tend to attribute to him and to elaborate on what that approach involves by reading Anselm?s argument in the context of Augustine?s?De Trinitate? and the whole of the?Proslogion? (shrink)

In the Third of his celebrated Five Ways in Summa Theologiae Ia, q. 2, a. 3, St. Thomas Aquinas argues for the existence of God from contingency and necessity noting that the world contains possible beings which are able not to be since, being generated and corrupted, they at some time do not exist. He claims to show that there must be some necessary being since it is impossible that all things are possible beings. Scholars have long found (...) this part of the Third Way problematic, since it appears that Aquinas is committing a logical fallacy. He seems to be arguing that all members of a group have one common attribute since they each have their own particular instance of that attribute, as one might argue that since everybody has a birthday, i.e., one day on which each was born, therefore, there is one (and the same) day on which everyone was born. This paper will show that the accusation that Aquinas commits the alleged Birthday Fallacy would mean he was arguing for a temporal beginning for all material things, and so believed that such claim was philosophically demonstrable. Aquinas, however, argued against our ability to naturally know physical creation had a beginning in time; such knowledge requires God’s revelation of it. Instead Aquinas in the Third Way is allowing for the possibility that the physical universe could be temporally infinite, as Aristotle argued, but that this possibility would still support Aquinas’ contention that some necessary being must exist. (shrink)

In recent years, a number of works have appeared with important implications for the age-old question of the existence of a god. These writings, many of which are not by theologians, strengthen the rational case for the existence of a god, even as this god may not be exactly the Christian God of history. This book brings together for the first time such recent diverse contributions from fields such as physics, the philosophy of human consciousness, evolutionary biology, mathematics, (...) the history of religion, and theology. Based on such new materials as well as older ones from the twentieth century, it develops five rational arguments that point strongly to the (very probable) existence of a god. They do not make use of the scientific method, which is inapplicable to the question of a god. Rather, they are in an older tradition of rational argument dating back at least to the ancient Greeks. For those who are already believers, the book will offer additional rational reasons that may strengthen their belief. Those who do not believe in the existence of a god at present will encounter new rational arguments that may cause them to reconsider their opinion. --back cover. (shrink)

This is the text of my OBO entry on arguments for the existence of God.

This chapter argues that the outbreak of the Protestant Reformation undermined the Christian consensus that unaided human reason could prove God’s existence. As a consequence the issue of the provability of God in principle gained new prominence and had to be addressed in the first instance before entering the discussion of specific proofs of His existence. On the basis of the answers given to the preliminary question of the provability of God’s existence, the chapter discusses eighteenth-century reformulations (...) of a priori and a posteriori arguments for the existence of God, as well as new directions taken by natural theology in the late eighteenth century. (shrink)