Arguments from Naturalism against Theism

To naturalize religion, we must identify what religion is, and what aspects of it we are trying to explain. In this paper, religious social institutional behavior is the explanatory target, and an explanatory hypothesis based on shared primate social dominance psychology is given. The argument is that various religious features, including the high status afforded the religious, and the high status afforded to deities, are an expression of this social dominance psychology in a context for which it did not evolve: (...) high-density populations made possible by agriculture. (shrink)

I prove the nonexistence of gods. The proof is based on three axioms: Ockham’s razor (OR), religiosity is endogenous in humans, and, there are no miracles. The OR is formulated operationally, to remove improper postulates, such that it yields not only a plausible argument but truth. The validity of the second and the third axiom is established empirically by inductive reasoning relying on a thorough analysis of the psychiatric literature and skeptical publications. With these axioms I prove that gods are (...) not necessary for our universe. Applying OR yields that gods do not exist. The implications of this article are enormous. Mankind’s understanding of the world is elevated to a higher level to a unified view on the world being nature and mankind being a part of it. (shrink)

Human beings are social animals, not solitary ones. Morality is an instinct we have because it helps us socialize, live together harmoniously. This paper reviews how the evolution of morality and other mental functions associated with our survival and sociality gave rise to cultural behavior among the small groups of humans during the Palaeolithic period when the tribe was personified as a supernatural identity and guardian, a totem, an ancestor and ultimately a god. Loyalty to the tribe required loyalty to (...) the tribal god representing the tribe. Preservation of the tribe meant mistrust of other tribes and their gods. The merging of small groups rendered obsolete the tribal, locally cultural conception of religion, but it persisted as monotheism in the imperial stage of society from about 2000 BC, becoming the world religions. Today’s empires are global, and a belief system modelled on local tribes in competition is naïve divisive. Out-group hatred is more of a threat than any in-group moral benefits, and they too are disappearing with the failure to preserve small group coherence, and justice and fairness in capitalist society. The moral failure of imperial religion on the urban and global scale is the “Death of God”. Humans now cannot afford the moral laziness of constantly appealing to a supernatural totem in an otherwise do-nothing religion. Imperial religion was and still is a tool of the political right, used to manipulate us. Yet Christ offered an ethical scheme that is essentially a practical morality of mutual lovingkindness which does not require a supernatural God. It is Secular Christianity, a world view any scientist and atheist could adopt without compromise, and most Christians should. (shrink)

Several metaphysical naturalists argue that the success of science, together with the claim that scientists adhere to methodological naturalism, amounts to strong evidence for metaphysical naturalism. I call this the scientific-success argument. It is argued that the scientific-success argument is similar to the no-miracles argument for realism in philosophy of science. On the no-miracles argument, the success of science is taken as strong evidence that scientific theories are true. Based on this similarity, some considerations relevant to one argument may also (...) be relevant to the other. One particular consideration is explored. The selectionist response to the no-miracles argument states that on an evolutionary model of science, in which scientific theories are accepted only after surviving a rigorous selection process, the no-miracles argument fails. The selectionist response also applies to the scientific-success argument. If scientific theories are selected for success, we do not need to explain the success of science by appealing to metaphysical naturalism. (shrink)

Skeptical theists are seeking for some reasonable solutions to the evidential problem of evil. One of the most fundamental responses of skeptical theism is that the concept of “gratuitous evil”, which cannot be a proof of the absence of God. Therefore, it is not the existence of God that skeptical theism suspects. Instead, skeptical theism contemplates whether the evil in the world really has a “gratuitous” basis. This paper focuses on Peter van Inwagen's “no-minimum claim”. No-minimum claim” stands in opposition (...) to the views that assume that God minimizes the evils that exist in the world in order to achieve justice. “No-minimum claim” acknowledges that these evils still have enormous amounts to people. Thus “no-minimum claim” suggests that the evils experienced in the world are incompatible with the “best of all possible worlds” views or the other explanations of classical theodicy. According to the “no minimum claim”, the reason why the amount of evil in the world still seems so high may be God’s deliberate calculations in effecting the distribution of these evils. In order to reach these calculations, it is not necessary for the amount of evil that God allowed to reflect on the world to be perfectly manifested at the minimum level. The purpose of this paper is to consider the skeptical theism approach within the framework of Peter van Inwagen's “no-minimum claim” and to limit his arguments to an alternative approach to skeptic theism. Our claim is that such view coincides with skeptical theism, but the “no- minimum claim” still has some ambiguities at the point of the limits of evil. From this, we can conclude that the “no minimum claim” has received many objections in the skeptical theism literature and these objections are justified at certain points. (shrink)

This book contains a unique perspective: that of a scientifically and philosophically educated agnostic who thinks there is impressive—if maddeningly hidden—evidence for the existence of God. Science and philosophy may have revealed the poverty of the familiar sources of evidence, but they generate their own partial defense of theism. Bryan Frances, a philosopher with a graduate degree in physics, judges the standard evidence for God’s existence to be awful. And yet, like many others with similar scientific and philosophical backgrounds, he (...) argues that the usual reasons for atheism, such as the existence of suffering and success of science, are weak. In this book you will learn why so many people with scientific and philosophical credentials are agnostics despite judging all the usual evidence for theism to be fatally flawed. (shrink)

Each author first presents his own side, and then they interact through two rounds of objections and replies. Pedagogical features include standard form arguments, section summaries, bolded key terms and principles, a glossary, and annotated reading lists.

David Hume (1711-1776) is widely recognized as one of the most influential and significant critics of religion in the history of philosophy. There remains, nevertheless, considerable disagreement about the exact nature of his views. According to some, he was a skeptic who regarded all conjectures relating to religious hypotheses to be beyond the scope of human understanding – he neither affirmed nor denied these conjectures. Others read him as embracing a highly refined form of “true religion” of some kind. On (...) the other side of this spectrum, it is claimed that Hume was committed to atheism, although due to social conditions at the time, this had to be (thinly) concealed or masked. The aim of this article is to provide an overview of Hume’s core concerns and arguments on this subject and to provide the reader with a framework for interpreting and assessing his various contributions. (shrink)

A number of commentators on Smith’s philosophy have observed that the relationship between his moral theory and his theological beliefs is “exceedingly difficult to unravel.” The available evidence, as generally presented, suggests that although Smith was not entirely orthodox by contemporary standards, he has no obvious or significant irreligious commitments or orientation. Contrary to this view of things, this essay argues that behind the veneer of orthodoxy that covers Smith’s discussion in The Theory of the Moral Sentiments there are significant (...) irreligious themes present in his work. -/- [First published in Italian as: “L’irreligione e lo spettatore imparziale nel sistema morale di Adam Smith”, in Rivista di Filosofia 3 (3):375-403 (2005). Translated by E. Lecaldano.]. (shrink)

Alvin Plantinga has famously argued that the naturalist who accepts evolutionary theory has a defeater for all of her beliefs, including her belief in naturalism and evolution. Hence, he says, naturalism, when conjoined with evolution, is self defeating and cannot be rationally accepted. This is known as the evolutionary argument against naturalism (EAAN). However, Tyler Wunder (Religious Studies 51:391– 399, 2015) has recently shown that if the EAAN is framed in terms of objective probability and theism is assumed to be (...) non-contingent, then either theism is necessarily false or the EAAN is unsound. Neither option is attractive to the proponent of the EAAN. Perry Hendricks (Religious Studies 1–5, 2018) has responded to Wunder’s criticism, showing that the EAAN can be salvaged and, indeed, strengthened, by framing it in terms not of naturalism (N), but of a proposition that is entailed by N that is also consistent with theism. We will show that once Hendricks’ solution to Wunder’s objection is accepted, a puzzle ensues: if the EAAN provides the naturalist with a defeater for all of her beliefs, then an extension of it appears to provide God with a defeater for all of his beliefs. After bringing out this puzzle, we suggest several ways in which the proponent of the EAAN might solve it, but also show some potential weaknesses in these purported solutions. Whether the solutions to the puzzle that we consider ultimately succeed is unclear to us. (Translation: the authors disagree. One author thinks that the solutions (or,at least, some of them) that we consider do solve the puzzle while the other author does not.) However, it is clear to us that this is an issue that proponents of the EAAN need to address. (shrink)

The evidential problem of evil involves a rarely discussed challenge, namely the challenge of defending theism against the hypothesis of a morally indifferent creator. Our argument uses a Bayesian framework and it starts by showing that if the only alternative to classical theism is naturalistic atheism, then fine-tuning can render theism virtually certain, even in the face of evil. But if the alternatives include the hypothesis of a morally indifferent creator, theism is defeated even if the fine-tuning premise is accepted. (...) The resulting version of the evidential problem is unsolvable using the tools that are currently deployed by theists against evil. (shrink)

Evolutionary research on the biological fitness of groups has recently given a prominent value to the role that prosocial behaviors play in favoring a successful adaptation to ecological niches. Such a focus marks a paradigm shift. Early views of evolution relied on the notion of natural selection as a largely competitive mechanism for the achievement of the highest amount of resources. Today, evolutionists from different schools think that collaborative attitudes are an irremovable ingredient of biological change over time. As a (...) consequence, a number of researchers have been attracted by evolutionary studies of human behaviors. Some think that a continuity among prosocial attitudes of human beings and other social mammals can be detected, and that this fact has relevance for accounting for human morality. Others deny one or the other of these claims, or both. The papers in the present special issue address how these topics impact ethics and religion. (shrink)

Proponents of the problem of animal suffering state that the great amount of animal death and suffering found in Earth’s natural history provides evidence against the truth of theism. In particular, philosophers such as Paul Draper have argued that regardless of the antecedent probability of theism and naturalism, animal suffering provides positive evidence for the truth of naturalism over theism. While theists have attempted to provide answers to the problem of animal suffering, almost none have argued that animal suffering and (...) death can be seen as positive evidence for theism. This essay will discuss several arguments from the writings of Thomas Aquinas that can be used to show that animal suffering and death are to be expected in theistic universes. In the first section, I discuss evidential arguments for naturalism from animal suffering. Next, I provide an overview of Aquinas’ arguments, particularly in Book II of the Summa Contra Gentiles. After this, I discuss the implications these arguments have for theistic universes. Finally, I conclude that these arguments refute evidential arguments for naturalism from animal suffering and also provide evidence that favors theism. (shrink)

Proponents of the problem of animal suffering claim that the millions of years of apparent nonhuman animal pain and suffering provides evidence against the existence of God. Neo-Cartesianism attempts to avoid this problem mainly by denying the existence of phenomenal consciousness in nonhuman animals. However, neo-Cartesian options regarding animal minds have failed to compel many. In this essay, I explore an answer to the problem of animal suffering inspired by the medieval theologian Thomas Aquinas. Instead of focusing on phenomenal consciousness, (...) the neo-Thomistic view of animal minds focuses on self-awareness. After proposing and providing evidence for this view, I conclude that nonhuman animal suffering is not morally significant. (shrink)

Contemporary philosophical debates about the competing merits of neurological and phenomenological approaches to understanding both psychiatric illness and religious experience—and, indeed, the relationship, if any, between psychiatric illness and religious experience. In this chapter, I propose that both psychiatric illness and religious experiences - at least in some of their diverse forms - are best understood phenomenologically in terms of radical changes in a person's 'existential feelings', in the sense articulated by Matthew Ratcliffe. If so, explanatory priority should be assigned (...) to phenomenology and not to neurology. (shrink)

The primary aim of this chapter is to evaluate whether considerations about a priori domains and abstract objects favor atheism over theism.

This is the concluding chapter of a debate book about the existence of God: *Theism and Atheism: Opposing Arguments in Philosophy* (Gale, 2019). The book has a large number of contributors on both sides. My chapter suggests one way of unifying the contributions that are made on the atheistic side.

This book is a discussion of a wide range of topics that bear on the existence of God. For each topic, there is a chapter by one (or more) theists, and a chapter by one (or more) atheists. Topics: (1) Definition; (2) Method; (3) Logic; (4) Doxastic Foundations; (5) Religious Experience; (6) Faith and Revelation; (7) Miracles; (8) Religious Diversity; (9) Causation and Sufficient Reason; (10) A Priori; (11) Our Universe; (12) Human History; (13) Human Beings; (14) Ethics; (15) Meaning; (...) (16) Evil and Suffering; (17) Science; (18) Theories of Religion; (19) Prudential / Pragmatic Arguments; (20) Final Reckonings. (shrink)

Andrew Shephardson contends in Who’s Afraid of the Unmoved Mover that the combined postmodern objections of Carl A. Raschke, James K. A. Smith, and me, to natural theology, fail. Here I focus only on the issue of idolatry and natural theology, as one way of demonstrating a fundamental inadequacy characteristic of Shephardson’s rebuttal of postmodern challenges to evangelical appropriations of natural theology. I argue that contrary to Shephardson’s contention, Acts 17 does not support evangelical appropriations of natural theology, but operates (...) with a view of reason consistent with my postmodern one and opens postmodern possibilities for understanding natural revelation. (shrink)

In Who’s Afraid of the Unmoved Mover? Postmodernism and Natural Theology, I defend natural theology against its postmodern evangelical detractors, including Myron Bradley Penner. Penner rejects natural theology because it attempts to ground knowledge of God in human reason, and he claims that my treatment of Acts 17:16–34 is fatal to my argument. However, Penner does not engage my explication of the doctrine of general revelation. The catastrophic effects that Penner perceives turn out to be only against a straw man (...) of the version of natural theology that I defend. (shrink)

When pressed, many atheists offer three reasons why they reject theism: there is strong evidence against theism, there is no strong evidence for theism, and theism is so outrageous that it needs a great deal of support in order for us to believe it in a reasonable manner. I examine the third reason, arguing that it fails.

William Lane Craig has defended the following two contentions: If theism is true, we have a sound foundation for morality, and, If theism is false, we do not have a sound foundation for morality. Erik Wielenberg rejects. Specifically, Wielenberg argues that naturalists have resources to make sense of objective moral values, moral duties, and moral knowledge. In response to Wielenberg, I defend Craig’s second contention by arguing that Wielenberg’s theory fails to robustly capture our moral phenomenology as well as make (...) intelligible robust moral knowledge. (shrink)

This is a Cambridge *Element*, on the topic of atheism and agnosticism. It contains four main parts. First, there is an introduction in which atheism and agnosticism are explained. Second, a theoretical background to assessment. Third, a case for preferring atheism to theism. Fourth, a case for preferring agnosticism to theism.

This book guides readers through an investigation of religion from a naturalistic perspective and explores the very meaning of the term ‘religious naturalism’. Oppy considers several widely disputed claims: that there cannot be naturalistic religion; that there is nothing in science that poses any problems for naturalism; that there is nothing in religion that poses any serious challenges to naturalism; and that there is a very strong case for thinking that naturalism defeats religion. -/- Naturalism and Religion: A Contemporary Philosophical (...) Investigation is an ideal introduction for undergraduate and postgraduate students of religious studies and philosophy who want to gain an understanding of the key themes and claims of naturalism from a religious and philosophical perspective. (shrink)

This paper outlines an argument for atheism from naturalism that I have developed in more detail elsewhere (in particular, in *The Best Argument against God*). The overall shape of the argument is as follows: first, naturalism is simpler than theism; second, there is no data that naturalism does not explain at least as well as theism; and, third, naturalism entails atheism; so we have good reason to prefer atheism to theism. Note that this statement of the shape of the argument (...) is NOT a statement of the argument itself. (shrink)

Some philosophers and scientists argue that as science progresses the religious domain shrinks ever more. They see the advance of science as an argument against religion and for naturalism. In what follows I construct the argument that is tacit in this line of reasoning and criticize it.

This essay assesses Paul Draper's argument from evolution to atheism.

I develop two problems, which I call the problem of divine location and the problem of divine age, to challenge the theist belief that God created the universe. The problem of divine location holds that it is not clear where God existed before he created the universe. The problem of divine age holds that it is not clear how old God was when he created the universe. I explore several theist responses to these two problems, and argue that all of (...) them are problematic under the existing conceptions of space and time in physics. The philosophical magnitudes of these two problems are equal to that of the problem of evil. (shrink)

The challenge from religious diversity is widely thought to be one of the most important challenges facing religious belief. Despite this consensus, however, many epistemologists think that standard versions of the challenge fail because they threaten to implicate many seemingly reasonable yet highly controversial non-religious beliefs. In light of this we develop an alternative, less discussed, diversity challenge that does not generalize. This challenge concerns why so much religious diversity exists in the first place given common religious, and in particular (...) theistic, views. Although there are some interesting scientific explanations of such diversity, satisfying theistic explanations of its existence are still required. (shrink)

This article discusses “explaining away” arguments in the cognitive science of religion. I distinguish two rather different ways of explaining away religion, one where religion is shown to be incompatible with scientific findings and one where supernatural entities are rendered superfluous by scientific explanations. After discussing possible objections to both varieties, I argue that the latter way offers better prospects for successfully explaining away religion but that some caveats must be made. In a second step, I spell out how CSR (...) can be used to spell out an argument of the second kind. One argument renders religion superfluous by claiming that it results from a cognitive bias and one does the same by claiming religion was a useful evolutionary adaptation. I discuss some strengths and weaknesses of both arguments. (shrink)

In this article, we examine in detail the New Atheists' most serious argument for the conclusion that God does not exist, namely, Richard Dawkins's Ultimate 747 Gambit. Dawkins relies upon a strong explanatory principle involving simplicity. We systematically inspect the various kinds of simplicity that Dawkins may invoke. Finding his crucial premises false on any common conception of simplicity, we conclude that Dawkins has not given good reason to think God does not exist.

Pope Francis takes the Big Bang as supplying empirical evidence for God’s existence, going so far as to credit God’s will as the force behind natural selection. So if natural selection is the emanation of divine will, then so too is what Richard Dawkins calls the “selfish gene” underlying it. The trouble is that the natural forces of self-interest may win out over the better angels of our nature, spelling disaster for the human species—and the planet sustaining it. For the (...) drive of individual self-interest is the main fuel of capitalism, which has become the dominant global economic paradigm. And this unbridled self-interest is arguably most responsible for widespread environmental degradation. Therefore, if humanity should ultimately expire as a direct result of its evolutionary adaptations, it won’t exactly be a ringing endorsement of the architect of life, the universe, and everything. (shrink)

This article examines philosophical naturalism—the chief rival to theism in the modern world— with contemporary apologetic concerns in view. The second section introduces the central claims of naturalism and the main arguments offered on its behalf. The third section surveys the challenges naturalism faces in accounting for two key features of human nature. The final section outlines the significance of these challenges in the context of an inference to the best explanation for theism.

In this paper, I argue that there is a kind of evil, namely, the unequal distribution of natural endowments, or natural inequality, which presents theists with a new evidential problem of evil. The problem of natural inequality is a new evidential problem of evil not only because, to the best of my knowledge, it has not yet been discussed in the literature, but also because available theodicies, such the free will defense and the soul-making defense, are not adequate responses in (...) the face of this particular evil, or so I argue. (shrink)

This paper consider three families of arguments for atheism. First, there are direct arguments for atheism: arguments that theism is meaningless, or incoherent, or logically inconsistent, or impossible, or inconsistent with known fact, of improbable given known fact, or morally repugnant, or the like. Second, there are indirect arguments for atheism: direct arguments for something that entails atheism. Third, there are comparative arguments for atheism: e.g., arguments for the view that (atheistic) naturalism is more theoretically virtuous than theism.

This paper argues that considerations about causal origins of the universe do not favour theism over naturalism. Indeed, if the only data that is relevant to the choice between theism and naturalism is data about causal origins, then it turns out that considerations about causal origins favour naturalism over theism.

Some people feel threatened by the thought that life might have arisen by chance. What is it about “chance” that some people find so threatening? If life originated by chance, this suggests that life was unintended and that it was not inevitable. It is ironic that people care about whether life in general was intended, but may not have ever wondered whether their own existence was intended by their parents. If it does not matter to us whether one's own existence (...) was intended, as will be hypothesized, then why should it matter whether there was some remote intent behind the creation of the first unicellular organism(s) billions of years ago? I will discuss three possible scenarios by which life might have originated. I will then argue that, in regard to whether one’s individual life can be meaningful, it does not matter whether life was intended or arose by chance. If complex life was unintended and is rare in this universe, this is not a reason to disparage life, but a reason to appreciate and value our existence. -/- . (shrink)

Recent decades have seen the emergence of various cognitive and biological explanations of religious belief that claim to be better scientifically supported than predecessor explanations. This article provides an overview of such explanations and some of the philosophical discussions they have evoked. Contemporary naturalistic explanations of religious belief come in three types: cognitive explanations, evolutionary explanations and co‐evolutionary explanations. Some writers have claimed that scientifically plausible biological and psychological accounts of religious belief make religious belief itself irrational because they reveal (...) the naturalness and unreliability of the mechanisms that produce religious belief. Conversely, others have argued that the possible naturalness of religious belief is not enough to make it irrational or unwarranted. They maintain that naturalistic explanations of religious belief cannot debunk religious belief wholesale, but instead their religious relevance depends on the ways in which religious people justify their beliefs. Philosophical debates are currently in their early stages, as are the naturalistic theories, and the chief philosophical stakes themselves have not yet come entirely into focus. (shrink)

This paper is an English version of the paper that was published in German under the title: "Über die Aussichten erfolgreicher Beweise für Theismus oder Atheismus". My English paper was translated into German by Gabriele Schlegel. -/- The aim of this paper is to examine the prospects for proofs or successful arguments for the existence or non-existence of God.

J. L. Schellenberg claims that the weakness of evidence for God’s existence is not merely a sign that God is hidden, “it is a revelation that God does not exist.” In Divine Hiddenness: New Essays, Michael J. Murray provides a “soul-making” defense of God’s hiddenness, arguing that if God were not hidden, then some of us would lose what many theists deem a (very) good thing: the ability to develop morally significant characters. In this paper, I argue that Murray’s soul-making (...) defense not only fails to defend God’s hiddenness, it produces (ironically) an argument for the nonexistence of God. (shrink)

This article gives a brief sketch of the naturalistic beliefs that I hold. It is not intended as a *defence* of those beliefs; the aim of the paper is simply to get the beliefs out onto the table.

A number of recent historians claim to have defeated what they call the ‘conflict thesis’, the idea that there exists some inevitable conflict between Darwinism and Christianity. This is often thought to be part of a broader ‘warfare thesis’, which posits an inevitable conflict between science and religion. But, all they have defeated is one, relatively uninteresting form of this thesis. There remain other forms of the conflict theses that remain entirely plausible, even in light of the historical record.