For thirty years, Peter Singer's Practical Ethics has been the classic introduction to applied ethics. For this third edition, the author has revised and updated all the chapters and added a new chapter addressing climate change, one of the most important ethical challenges of our generation. Some of the questions discussed in this book concern our daily lives. Is it ethical to buy luxuries when others do not have enough to eat? Should we buy meat from intensively reared animals? Am (...) I doing something wrong if my carbon footprint is above the global average? Other questions confront us as concerned citizens: equality and discrimination on the grounds of race or sex; abortion, the use of embryos for research and euthanasia; political violence and terrorism; and the preservation of our planet's environment. This book's lucid style and provocative arguments make it an ideal text for university courses and for anyone willing to think about how she or he ought to live. (shrink)

How should the concept of evidence be understood? And how does the concept of evidence apply to the controversy about creationism as well as to work in evolutionary biology about natural selection and common ancestry? In this rich and wide-ranging book, Elliott Sober investigates general questions about probability and evidence and shows how the answers he develops to those questions apply to the specifics of evolutionary biology. Drawing on a set of fascinating examples, he analyzes whether claims about intelligent design (...) are untestable; whether they are discredited by the fact that many adaptations are imperfect; how evidence bears on whether present species trace back to common ancestors; how hypotheses about natural selection can be tested, and many other issues. His book will interest all readers who want to understand philosophical questions about evidence and evolution, as they arise both in Darwin's work and in contemporary biological research. (shrink)

Can the issue of how important it is whether or not there is a God be decided prior to deciding whether or not there is a God? In this paper, I explore some difficulties that stand in the way of answering this question in the affirmative and some of the implications of these difficulties for that part of the Philosophy of Religion which concerns itself with assessing arguments for and against the existence of God, the implications for how its importance (...) may best be defended within secular academe. (shrink)

Philosophers often distinguish in some way between two senses of life's meaning. Paul Edwards terms these a ‘cosmic’ and ‘terrestrial’ sense. The cosmic sense is that of an overall purpose of which our lives are a part and in terms of which our lives must be understood and our purposes and interests arranged. This overall purpose is often identified with God's divine scheme, but the two need not necessarily be equated. The terrestrial sense of meaning is the meaning people find (...) in their own lives apart from the place of their lives in any ultimate end or context. (shrink)

In recent years, William Lane Craig has vigorously championed a moral argument for God's existence. The backbone of Craig's argument is the claim that only God can provide a ' sound foundation in reality' for morality. The present article has three principal aims. The first is to interpret and clarify the account of the ontological foundation of morality proposed by Craig. The second is to press home an important objection to that account. The third is to expose the weakness of (...) Craig's case for saying that without God morality would be groundless and illusory. (shrink)

The universe that surrounds us is vast, and we are so very small. When we reflect on the vastness of the universe, our humdrum cosmic location, and the inevitable future demise of humanity, our lives can seem utterly insignificant. Many philosophers assume that such worries about our significance reflect a banal metaethical confusion. They dismiss the very idea of cosmic significance. This, I argue, is a mistake. Worries about cosmic insignificance do not express metaethical worries about objectivity or nihilism, and (...) we can make good sense of the idea of cosmic significance and its absence. It is also possible to explain why the vastness of the universe can make us feel insignificant. This impression does turn out to be mistaken, but not for the reasons typically assumed. In fact, we might be of immense cosmic significance—though we cannot, at this point, tell whether this is the case. (shrink)

What makes a person's life meaningful? Thaddeus Metz offers a new answer to an ancient question which has recently returned to the philosophical agenda. He proceeds by examining what, if anything, all the conditions that make a life meaningful have in common. The outcome of this process is a philosophical theory of meaning in life. He starts by evaluating existing theories in terms of the classic triad of the good, the true, and the beautiful. He considers whether meaning in life (...) might be about such principles as fulfilling God's purpose, obtaining reward in an afterlife for having been virtuous, being attracted to what merits attraction, leaving the world a better place, connecting to organic unity, or transcending oneself by connecting to what is extensive. He argues that no extant principle satisfactorily accounts for the three-fold significance of morality, enquiry, and creativity, and that the most promising theory is a fresh one according to which meaning in life is a matter of intelligence contoured toward fundamental conditions of human existence. (shrink)

The object of attitudes valorized in the major religious traditions is typically regarded as maximally great. Conceptions of maximal greatness differ but theists believe that a maximally great reality must be a maximally great person or God. Theists largely agree that a maximally great person would be omnipresent, omnipotent, omniscient, and all good. They do not agree on a number of God's other attributes, however. We will illustrate this by examining the debate over God's impassibility in western theism and a (...) dispute over God's relation to the space time world in Indian theism. The entry concludes by examining some concepts of limited deities. (shrink)

The topic of self-interest raises large and intractable philosophical questions–most obviously, the question “In what does self-interest consist?” The concept, as opposed to the content of self-interest, however, seems clear enough. Self-interest is interest in one's own good. To act self-interestedly is to act on the motive of advancing one's own good. Whether what one does actually is in one's self-interest depends on whether it actually does advance, or at least, minimize the decline of, one's own good. Though it may (...) be difficult to tell whether a person is motivated by self-interest in a particular instance, and difficult also to determine whether a given act or decision really is in one's self-interest, the meaning of the claims in question seems unproblematic. My main concern in this essay is to make a point about the content of self-interest. Specifically I shall put forward the view that meaningfulness, in a sense I shall elaborate, is an important element of a good life. It follows, then, that it is part of an enlightened self-interest that one wants to secure meaning in one's life, or, at any rate, to allow and promote meaningful activity within it. Accepting this substantial conception of self-interest, however, carries with it a curious consequence: the concept of self-interest which formerly seemed so clear begins to grow fuzzy. Fortunately, it comes to seem less important as well. In Reasons and Persons, Derek Parfit distinguishes three sorts of theories about self-interest–hedonistic theories, preference theories, and what he calls “objective-list theories." Hedonistic theories hold that one's good is a matter of the felt quality of one's experiences. (shrink)

Natural disasters would seem to constitute evidence against the existence of God, for, on the face of things, it is mysterious why a completely good and all-powerful God would allow the sort of suffering we see from earthquakes, diseases, and the like. The skeptical theist replies that we should not expect to be able to understand God's ways, and thus we should not regard it as surprising or mysterious that God would allow natural evil. I argue that skeptical theism leads (...) to moral paralysis: accepting skeptical theism would undermine our ability to make any moral judgments whatsoever. Second, and more briefly, I argue that skeptical theism would undercut our ability to accept any form of the argument from design, including recent approaches based on fine-tuning. (shrink)

Whether God exists is a metaphysical question. But there is also a neglected evaluative question about God’s existence: Should we want God to exist? Very many, including many atheists and agnostics, appear to think we should. Theists claim that if God didn’t exist things would be far worse, and many atheists agree; they regret God’s inexistence. Some remarks by Thomas Nagel suggest an opposing view: that we should want God not to exist. I call this view anti-theism. I explain how (...) such view can be coherent, and why it might be correct. Anti-theism must be distinguished from the argument from evil or the denial of God’s goodness; it is a claim about the goodness of God’s existence. Anti-theists must claim that it’s a logical consequence of God’s existence that things are worse in certain respects. The problem is that God’s existence would also make things better in many ways. Given that God’s existence is likely to be impersonally better overall, anti-theists face a challenge similar to that facing nonconsequentialists. I explore two ways of meeting this challenge. (shrink)

Nozick analyzes fundamental issues, such as the identity of the self, knowledge and skepticism, free will, the foundations of ethics, and the meaning of life.

The relations between reason, motivation and value present problems which, though ancient, remain intractable. If values are objective and rational how can they move us and if they are dependent on our contingent desires how can they be rational? E. J. Bond makes a bold attack on this dilemma. The widespread view among philosophers today is that judgements contain an irreducible element of personal commitment. To this Professor Bond proposes an account of values as objective and value judgements as true (...) or false, employing a distinction between grounding and motivating reasons to establish their connection with action. He defines and tests his position against a number of recent theories, providing in the process forceful criticism of Williams, Wiggins, Foot, Narveson and Nagel, among others. A distinctive contribution to the subject, it will stimulate interest and worthwhile debate among philosophers, while also serving as an introduction to this vital topic. (shrink)

According to the much-discussed argument from divine hiddenness, God's existence is disconfirmed by the fact that not everyone believes in God. The argument has provoked an impressive range of theistic replies, but none has overcome the challenge posed by the unevendistribution of theistic belief around the world, a phenomenon for which naturalistic explanations seem more promising. The confound any explanation of why non-belief is always blameworthy or of why God allows blameless non-belief. They also cast doubt on the existence of (...) a sensusdivinitatis: the awareness of God that Reformed epistemologists claim is innate in all normal human beings. Finally, the demographics make the argument from divine hiddenness in some ways a better atheological argument than the more familiar argument from evil. (shrink)

Before Duns Scotus, most philosophers agreed that God is identical with His necessary intrinsic attributes--omnipotence, omniscience, etc. This Identity Thesis was a component of widely held doctrines of divine simplicity, which stated that God exemplifies no metaphysical distinctions, including that between subject and attribute. The Identity Thesis seems to render God an attribute, an abstract object. This paper shows that the Identity Thesis follows from a basic theistic belief and does not render God abstract. If also discusses how one might (...) move from the Identity Thesis to the full doctrine of divine simplicity and shows that the Identity Thesis generates a new ontological argument. (shrink)

The question 'What is the meaning of life?' is one of the most fascinating, oldest and most difficult questions human beings have ever posed themselves. In an increasingly secularized culture, it remains a question to which we are ineluctably and powerfully drawn. Drawing skillfully on a wealth of thinkers, writers and scientists from Augustine, Descartes, Freud and Camus, to Spinoza, Pascal, Darwin, and Wittgenstein, _On the Meaning of Life_ breathes new vitality into one of the very biggest questions.

This entry begins by indicating respects in which the concept of life’s meaning has only recently become salient in English-speaking bioethical discussions and by clarifying what talk of ‘life’s meaning’ and cognate phrases mean, at least to most of the philosophers and bioethicists who have used them. This essay then addresses six major respects in which thought about what makes a life meaningful has influenced bioethics. The first four issues concern life and death matters for human beings, and specifically involve: (...) euthanasia and physician-assisted suicide, reproductive ethics, life extension, and transhumanism. The other two topics are about respects in meaningfulness figures into somewhat ‘less vital’ medical contexts, concerning ways in which promoting health is conceived either as a way to advance meaning or as in competition with the latter value. This essay concludes by offering a brief bird’s-eye reflection on the state of the field. (shrink)

Much seems to be at stake in metaphysical questions about, for example, God, free will or morality. One thing that could be at stake is the value of the universe we inhabit—how good or bad it is. We can think of competing philosophical positions as describing possibilities, ways the world might turn out to be, and to which value can be assigned. When, for example, people hope that God exists, or fear that we do not possess free will, they express (...) attitudes towards these possibilities, attitudes that presuppose answers to questions about their comparative value. My aim in this paper is to distinguish these evaluative questions from related questions with which they can be confused, to identify structural constraints on their proper pursuit, and to address objections to their very coherence. Answers to such evaluative questions offer one measure of the importance of philosophical disputes. (shrink)

Recent discussions, principally among analytic philosophers, concerning the meaning and the validity of the ‘question of life's meaning’ are significant in several ways. They indicate how analytic philosophy, long charged with sterility, can clarify deeply human questions. They suggest useful avenues of discussion between the analysts and the existentialists, phenomenologists and process philosophers. And they offer some illuminating discriminations between theism and naturalism, and between religious and non-religious understandings of life. But an additional consequence of these discussions is the emergence (...) of a series of challenges to most forms of theism, especially Christianity. In this paper we will be concerned with the latter. (shrink)

Skeptical theism contends that, due to our cognitive limitations, we cannot expect to be able to determine whether there are reasons which justify God’s permission of apparently unjustified evils. Because this is so, the existence of these evils does not constituted evidence against God’s existence. A common criticism is that the skeptical theist is implicitly committed to other, less palatable forms of skepticism, especially moral skepticism. I examine a recent defense against this charge mounted by Michael Bergmann. I point out (...) that the Bergmannian skeptical theist is unable to determine concerning any event or feature of the world whether that feature or event is good or evil all-things-considered. Because of this the skeptical theist must abandon any attempt to act in such a way that the world becomes better rather than worse as a result. These, I claim, are seriously skeptical conclusions, and should cause us to be skeptical about skeptical theism itself. (shrink)

Autistic-spectrum conditions and psychotic-spectrum conditions (mainly schizophrenia, bipolar disorder, and major depression) represent two major suites of disorders of human cognition, affect, and behavior that involve altered development and function of the social brain. We describe evidence that a large set of phenotypic traits exhibit diametrically opposite phenotypes in autistic-spectrum versus psychotic-spectrum conditions, with a focus on schizophrenia. This suite of traits is inter-correlated, in that autism involves a general pattern of constrained overgrowth, whereas schizophrenia involves undergrowth. These disorders also (...) exhibit diametric patterns for traits related to social brain development, including aspects of gaze, agency, social cognition, local versus global processing, language, and behavior. Social cognition is thus underdeveloped in autistic-spectrum conditions and hyper-developed on the psychotic spectrum.;>We propose and evaluate a novel hypothesis that may help to explain these diametric phenotypes: that the development of these two sets of conditions is mediated in part by alterations of genomic imprinting. Evidence regarding the genetic, physiological, neurological, and psychological underpinnings of psychotic-spectrum conditions supports the hypothesis that the etiologies of these conditions involve biases towards increased relative effects from imprinted genes with maternal expression, which engender a general pattern of undergrowth. By contrast, autistic-spectrum conditions appear to involve increased relative bias towards effects of paternally expressed genes, which mediate overgrowth. This hypothesis provides a simple yet comprehensive theory, grounded in evolutionary biology and genetics, for understanding the causes and phenotypes of autistic-spectrum and psychotic-spectrum conditions. (shrink)

This chapter critically explores contemporary philosophical understandings of whether meaning in life might depend on the presence or absence of an afterlife. After distinguishing various kinds of afterlife, it focuses most on the potential relevance of an eternal one, and considers at length the extreme but common views amongst philosophers that an eternal afterlife would be either necessary for a meaningful life or, conversely, sufficient for a meaningless one. It concludes by considering the plausibility of a more moderate view, that (...) an eternal afterlife could substantially enhance the meaning of our lives, even if they would not be meaningless without it. The aim of the chapter is not to defend some overall thesis about these positions, but rather to acquaint the reader with recent English-speaking philosophical discussions of them. (shrink)

The commentaries on our target article, reflect the multidisciplinary yet highly fragmented state of current studies of human social cognition. Progress in our understanding of the human social brain must come from studies that integrate across diverse analytic levels, using conceptual frameworks grounded in evolutionary biology.

This article responds to one of Thaddeus Metz's criticisms of the theory that the meaning of life is to fulfil a purpose assigned by God. In particular, it addresses the argument that only an atemporal God could ground meaning but that an atemporal God could not assign a purpose. In order to do this, the article first argues that Metz's criticisms misread the relevant sense of purpose. It then argues that on a more plausible reading of 'purpose', we can see (...) that it is in fact the kind of thing that an atemporal God could assign. (shrink)