Subjectivism about normativity (SN) is the view that norms are never intrinsic to things but are instead always imposed from without. After clarifying what SN is, I argue against it on the basis of its implications concerning intentionality. Intentional states with the mind-to-world direction of fit are essentially norm-subservient, i.e., essentially subject to norms such as truth, coherence, and the like. SN implies that nothing is intrinsically an intentional state of the mind-to-world sort: its being such a state is only (...) a status relative to the imposition of a norm. If one rejects this view of mind-to-world states, then one has grounds for rejecting SN itself. If one accepts it, an infinite regress arises that makes it impossible for norms to be imposed, which means that SN has undermined itself. (shrink)

I consider the most serious problem for the traditional account of divine creation in theistic actualism. According to van Inwagen's modal collapse argument, ultimate explanation entails that gratitude to God for one's existence is totally inappropriate. Ultimately, the actual world, and everything in it, is self-explanatory, and not a consequence of divine creation. I argue that van Inwagen's argument is unsound. It is consistent with an ultimate explanation for the world that the actual world is contingently necessary. If God actualizes (...) the world as a matter of contingent necessity, then gratitude to God for one's existence is perfectly appropriate. It is true that we exist as a matter of necessity, but that necessary existence is just a contingent fact. There are possible worlds in which we fail to exist altogether. (shrink)

The dead donor rule justifies current practice in organ procurement for transplantation and states that organ donors must be dead prior to donation. The majority of organ donors are diagnosed as having suffered brain death and hence are declared dead by neurological criteria. However, a significant amount of unrest in both the philosophical and the medical literature has surfaced since this practice began forty years ago. I argue that, first, declaring death by neurological criteria is both unreliable and unjustified but (...) further, the ethical principles which themselves justify the dead donor rule are better served by abandoning that rule and instead allowing individuals who have suffered severe and irreversible brain damage to become organ donors, even though they are not yet dead and even though the removal of their organs would be the proximal cause of death. (shrink)

The paper aims to show that, if S5 is the logic of metaphysical necessity, then no state of affairs in any possible world constitutes any non-trivial evidence for or against the existence of the traditional God. There might well be states of affairs in some worlds describing extraordinary goods and extraordinary evils, but it is false that these states of affairs constitute any (non-trivial) evidence for or against the existence of God. The epistemological and metaphysical consequences for philosophical theology of (...) assuming that S4 or Kσρ is the logic of metaphysical necessity are equally untenable. S4 guarantees that God does not exist if there is the slightest evidence against the existence of God. And Kσρ guarantees that God might survive the loss or acquisition of any essential property at all. (shrink)

The minimal God exemplifies essential omnipotence, omniscience, and moral perfection, but none of the other properties of the traditional God. I examine the consequences of the minimal God in augmented S5, S4, and Kρσ. The metaphysical consequences for the minimal God in S5 include the impossibility that God—or any other object—might acquire, lose, or exchange an essential property. It is impossible that an essentially divine being might become essentially human, for instance. The epistemological consequences include the impossibility of agnosticism—it is (...) impossible that P(◻︎FG |E) = P(~◻︎FG| E). Indeed, every weaker forms of agnosticism are also impossible—it is impossible that P(◻︎FG |E) = n, n(0 < n < 1). The metaphysical and epistemological consequences for the minimal God in S4 are equally untenable. I show that we can avoid all of these unwelcome epistemological consequences for the minimal God in Kρσ. But Kρσ has some extraordinary metaphysical consequences for the minimal God. All of the problems for the minimal God generalize to the maximal God. (shrink)

Philosophical discussions of Molyneux's problem within contemporary philosophy of mind tend to characterize the problem as primarily concerned with the role innately known principles, amodal spatial concepts, and rational cognitive faculties play in our perceptual lives. Indeed, for broadly similar reasons, rationalists have generally advocated an affirmative answer, while empiricists have generally advocated a negative one, to the question Molyneux posed after presenting his famous thought experiment. This historical characterization of the dialectic, however, somewhat obscures the role Molyneux's problem has (...) played in spawning debates within the empiricist tradition. Fortunately, the differences between various empiricist accounts have been widely recognized and discussed among historians of philosophy working on the topic. The focus of the present essay is to develop an interpretation of John Locke's views on Molyneux's problem that best coheres with his other views on human understanding as well as with the predominant scientific opinion about the nature of perception during the period in which he lived. (shrink)

Recently, scholars have criticized what they call the “Kantian-Republican” thesis of freedom as non-domination. The main complaint is that domination is unavoidable. This concern can be separated into the problem of state domination, which suggests that the state's intervening powers necessarily dominate its citizens, and the problem of majority domination, which suggests that the People necessarily dominate individual citizen as a result of the potential to form dominating majorities.

Perhaps the greatest impediment to a viable libertarianism is the provision of a satisfactory explanation of how actions that are undetermined by an agent's character can still be under the control of, or ‘up to’, the agent. The ‘luck problem’ has been most assiduously examined by Robert Kane who supplies a detailed account of how this problem can be resolved. Although Kane's theory is innovative, insightful, and more resourceful than most of his critics believe, it ultimately cannot account for the (...) type of control that moral responsibility and (ultimate) agency legitimately require. (shrink)

I provide the account of divine creation found in multiverse theorists Donald Turner, Klaas Kraay, and Tim O’Connor. I show that the accounts Kraay and Turner offer are incoherent. God does not survey all possible worlds and necessarily actualize those universes in the (on balance) good worlds or the worthy worlds. If God necessarily actualizes the multiverse, we have no idea which universes are parts of that multiverse. I show next that Tim O’Connor’s multiverse account of creation is also incoherent. (...) I argue that a preferable multiverse would include a much greater variety of universes than are included in Turner, Kraay or O’Connor. In the last section I offer some concluding remarks. (shrink)

A number of Christian theologians and philosophers have been critical of overly moralizing approaches to the doctrine of sin, but nearly all Christian thinkers maintain that moral fault is necessary or sufficient for sin to obtain. Call this the “Moral Consensus.” I begin by clarifying the relevance of impurities to the biblical cataloguing of sins. I then present four extensional problems for the Moral Consensus on sin, based on the biblical catalogue of sins: (1) moral over-demandingness, (2) agential unfairness, (3) (...) moral repugnance, and (4) moral atrocity. Next, I survey several partial solutions to these problems, suggested by the recent philosophical literature. Then I evaluate two largely unexplored solutions: (a) genuine sin dilemmas and (b) defeasible sinfulness. I argue that (a) creates more problems than it solves and that, while (b) is well-motivated and solves or eases each of the above problems, (b) leaves many biblical ordinances about sin morally misleading, creating (5) a pedagogical problem of evil. I conclude by arguing that (5) places hefty explanatory burdens on those who would appeal to (b) to resolve the four extensional problems discussed in this paper. So Christian thinkers may need to consider a more radical separation of sin and moral fault. (shrink)

I defend a theory of mental representation that satisfies naturalistic constraints. Briefly, we begin by distinguishing (i) what makes something a representation from (ii) given that a thing is a representation, what determines what it represents. Representations are states of biological organisms, so we should expect a unified theoretical framework for explaining both what it is to be a representation as well as what it is to be a heart or a kidney. I follow Millikan in explaining (i) in terms (...) of teleofunction, explicated in terms of natural selection. -/- To explain (ii), we begin by recognizing that representational states do not have content, that is, they are neither true nor false except insofar as they both “point to” or “refer” to something, as well as “say” something regarding whatever it is they are about. To distinguish veridical from false representations, there must be a way for these separate aspects to come apart; hence, we explain (ii) by providing independent theories of what I call f-reference and f-predication (the ‘f’ simply connotes ‘fundamental’, to distinguish these things from their natural language counterparts). -/- Causal theories of representation typically founder on error, or on what Fodor has called the disjunction problem. Resemblance or isomorphism theories typically founder on what I’ve called the non-uniqueness problem, which is that isomorphisms and resemblance are practically unconstrained and so representational content cannot be uniquely determined. These traditional problems provide the motivation for my theory, the structural preservation theory, as follows. F-reference, like reference, is a specific, asymmetric relation, as is causation. F-predication, like predication, is a non-specific relation, as predicates typically apply to many things, just as many relational systems can be isomorphic to any given relational system. Putting these observations together, a promising strategy is to explain f-reference via causal history and f-predication via something like isomorphism between relational systems. -/- This dissertation should be conceptualized as having three parts. After motivating and characterizing the problem in chapter 1, the first part is the negative project, where I review and critique Dretske’s, Fodor’s, and Millikan’s theories in chapters 2-4. Second, I construct my theory about the nature of representation in chapter 5 and defend it from objections in chapter 6. In chapters 7-8, which constitute the third and final part, I address the question of how representation is implemented in biological systems. In chapter 7 I argue that single-cell intracortical recordings taken from awake Macaque monkeys performing a cognitive task provide empirical evidence for structural preservation theory, and in chapter 8 I use the empirical results to illustrate, clarify, and refine the theory. (shrink)

This article was primarily a reaction to Dennett's Sweet Dreams (2005). In it Dennett pretends to renounce zombies. But what he means is that consciousness is nothing beyond that which can be tested behaviorally and objectively, so since zombies pass these tests, they can't be said to be unconscious – yet that is part of their definition. So they are a contradiction. In other words, zombies are inconceivable because a being that is "behaviorally, objectively indistinguishable from a conscious person" just (...) doesn't deserve in Dennett's eyes to be called unconscious. I argue, to the contrary, that zombies must lack brains since it is perfectly clear that in our universe having a brain (normally) entails having consciousness. I argue also that brain states are about people and things in the world, meaning for example that for some brain state S, necessarily if one is in brain state S, one is thinking about external object A. The brain "comes with" a world. The brain, therefore, transcends the boundaries of the skull. Science (and Dennett) cannot reduce the brain to something that doesn't pull off this most astonishing of feats. (shrink)

According to Paul Draper and Ryan Nichols the practice of philosophy of religion—and especially its theistically committed practitioners—regularly violate norms of rationality, objectivity, and impartiality in the review, assessment, and weighing of evidence. (Draper and Nichols, 2013). We consider the charge of epistemic partisanship and show that the observational data does not illustrate a norm-violating form of inquiry. The major oversight in the charge of epistemic partiality is the epistemically central role of prior probabilities in determining the significance of incongruent (...) evidence. We argue that reasonably divergent views on the likelihood of theism on incongruent evidence can also account for differences in significance. We conclude that it is an epistemic requirement that committed theists regard incongruent evils as much less significant evidence against theism than do lukewarm theists, agnostics, or atheists. Differences in the significance of evidence quite properly reflect differences in commitments to theism. (shrink)

In ‘Evil is Still Evidence: Comments on Almeida’ Robert Bass presents three objections to the central argument (ENE) in my ‘Evil is Not Evidence’. The first objection is that ENE is invalid. According to the second objection, it is a consequence of ENE that there can be no evidence for or against a posteriori necessities. The third objection is that, contrary to ENE, the likelihood of certain necessary identities varies with the evidence we have for them. In this reply I (...) explain why ENE has exactly none of the implications described by Bass. I argue in the concluding section that there is a modal solution to the epistemological problems presented by ENE. (shrink)

Kant’s Naturrecht Feyerabend has recently gained more sustained attention for its role in clarifying Kant’s published positions in political philosophy. However, too little attention has been given to the lecture’s relation to Gottfried Achenwall, whose book was the textbook for the course. In this paper, I will examine how Kant rejected and transforms Achenwall’s natural law system in the Feyerabend Lectures. Specifically, I will argue that Kant problematizes Achenwall’s foundational notion of a divine juridical state which opens up a normative (...) gap between objective law and subjective rights. In the absence of a divine sovereign, formal natural law is unable to justify subjective natural rights in the state of nature. In the Feyerabend Lectures, Kant, in order to close this gap, replaces the divine will with the “will of society”, making the state necessary for the possibility of rights. (shrink)

Many philosophers of science believe that empirical psychology can contribute little to the philosophical investigation of explanations. They take this to be shown by the fact that certain explanations fail to elicit any relevant psychological events (e.g., familiarity, insight, intelligibility, etc.). We report results from a study suggesting that, at least among those with extensive science training, a capacity to render an event intelligible is considered a requirement for explanation. We also investigate for whom explanations must be capable of rendering (...) events intelligible and whether or not accuracy is also viewed as a requirement. (shrink)

What is Derrida Saying to Us - Abstract Jacques Derrida is difficult and controversial. This article concentrates on the first part of On Grammatology (1967) as the Rosetta Stone to understanding him. It examines concepts such as the metaphysics of presence, the trace, differance, and deconstruction, aiming to interest readers further in pursuing him in more depth.

Most theists do not put a (subjective) probability of 1 (certainty) on God's existence. Most atheists do not put a probability of 0 on God's existence. I argue that these familiar positions are incoherent. On the assumption of S5 and the probability calculus it can be shown that the only coherent (subjective) probabilities an agent can assign to God's existence/non-existence are 0 or 1. Believers must be completely committed believers and non-believers must be completely committed non-believers. Agnosticism is not a (...) coherent position. (shrink)

Assuming divine command theory is true, there are no moral limits on the commands God can issue. Nevertheless there are no possible worlds in which divine command theory is true and God commands cruelty for its own sake or the sacrifice of ten-year-olds in a gruesome ritual, or anything of the kind. The main conclusion of the argument is that God cannot command the morally horrible not because of God's moral perfection or God's lack of power, of God's kindness, etc., (...) but because commanding the morally horrible entails a contradiction. I show that the argument is an instance of a valid and uncontroversial counterfactual sequent. Divine command theory entails that there are commands that even an omnipotent and morally unconstrained being cannot issue. (shrink)

The distinction between the essential and the accidental characteristics of a thing should be understood not in modal terms (the received view) nor in definitional terms (Fine’s recent proposal) but as follows: an essential characteristic of a thing is one that is not explained by any other of that thing’s characteristics, and an accidental characteristic of a thing is one that is so explained. Various versions of this proposal can be formulated.

Orthodoxy holds that the difference between weakness of will and compulsion is a matter of the resistibility of an agent's effective motivation, which makes control-based views of agency especially well equipped to distinguish blameworthy weak-willed acts from non-blameworthy compulsive acts. I defend an alternative view that the difference between weakness and compulsion instead lies in the fact that agents would upon reflection give some conative weight to acting on their weak-willed desires for some aim other than to extinguish them, but (...) not to their compulsive desires. This view allows identificationist theorists of moral responsibility to explain why weak-willed actions, but not compulsive actions, are attributable to agents such that they can, in theory, be praised or blamed for them. After motivating and presenting the view in detail, I show how it has unique resources for explaining the ethics of managing one's compulsions. (shrink)

Freedom, liberty and rights are terms that long have suffered from vagueness that allows a host of differing interpretations, most of them ideological and overly simplistic. Good, serious modeling descriptions of those terms would not overlook the necessary complexity involved in these social interactions. MacCallum’s idea of (political and social) triadic freedom is here extended to include resources, ability, externalities, benefits to the exerciser, and reasons for non-interference. Interference is described as a subset of freedoms with significant externalities. A right (...) is then described as a compound of a freedom protected by interferences. This provides a basis for the analysis of the game-theoretic economics of rights and when they will be produced. (shrink)

In this chapter I argue that choosing to live forever comes with the threat of an especially pernicious kind of boredom. However, it may be theoretically possible to circumvent it by finding ways to pursue an infinite number of projects consistent with one’s personality, taking on endlessly pursuable endlessly interesting projects, or by rekindling old projects once you’ve forgotten about them. However, each of these possibilities is contingent upon having certain traits that you are likely not currently in a good (...) position to assess. I therefore argue that no one is in a good position to be confident about her prospects for living forever. (shrink)

There are few if any good summaries of this neglected work on the internet, or even in publication generally. The one given here is more extensive than most, and points out the wisdom and erudition of Kant's thinking about freedom of the will. It also paves the way for another article already on this website on Kant’s view of the world in general.

This essay examines three approaches to the concept of death: an existential approach by Heidegger, a pragmatic evaluation by Nagel, and an experiential account by Philip Gould, who was not a professional philosopher but who wrote a detailed description of the time before his death from cancer. It compares and contrasts the different approaches, and uses Gould's account as a real a life check on the two philosophical analyses.

This paper advances a new agentially undemanding account of the conditions of attributability, the Minimal Approval account, and argues that it has a number of advantages over traditional Deep Self theories, including the way in which it handles agents with conditions like addiction, Tourette syndrome, and misophonia. It is argued that in order for an agent to be attributionally responsible, the mental process that leads to her action must dispose her to be such that she would, upon reflec-tion, approve to (...) some minimal degree of being moved to action by the motive on which she in fact acts. (shrink)

This article consists of notes on Kant’s preparatory work on morality. I am indebted to Paton’s comments in his translation, and these are acknowledged in the text. As with the companion article on the “Critique of Practical Reason”, I am making preparations here for a later summary of Kant’s view of the world in general. .

Philosophy is often divided into two traditions: analytic and continental philosophy. Characterizing the analytic-continental divide, however, is no easy task. Some philosophers explain the divide in terms of the place of argument in these traditions. This raises the following questions: Is analytic philosophy rife with arguments while continental philosophy is devoid of arguments? Or can different types of arguments be found in analytic and continental philosophy? This paper presents the results of an empirical study of a large corpus of philosophical (...) texts mined from the JSTOR database (n = 53,260) designed to find patterns of argumentation by type. Overall, the results suggest that there are no significant differences between the types of arguments advanced in analytic and continental philosophy journal articles. The findings, therefore, provide no empirical support to the hypothesis that the divide between analytic and continental philosophy has to do with the place of argument in these traditions. (shrink)

Bernard Williams argues that human mortality is a good thing because living forever would necessarily be intolerably boring. His argument is often attacked for unfoundedly proposing asymmetrical requirements on the desirability of living for mortal and immortal lives. My first aim in this paper is to advance a new interpretation of Williams' argument that avoids these objections, drawing in part on some of his other writings to contextualize it. My second aim is to show how even the best version of (...) his argument only supports a somewhat weaker thesis: it may be possible for some people with certain special psychological features to enjoy an immortal life, but no one has good reason to bet on being such a person. (shrink)

There seems to me to be a problem with the interpretation of Jean-Paul Sartre’s use of the words “being” and “nothingness” in his philosophy. Is his idea of being the same as that of Heidegger? While I’m quite sure of the metaphysical aspects of the argument, I’m not sure whether within those aspects Sartre equates nothingness with freedom, or whether the freedom (of action) arises from the nothingness. This short essay attempts to find a solution to the problem.

This essay is about the way Kant sees the world rather than about his moral philosophy and his theories of justice. It concentrates on perception of the physical world, and how far this can take us in understanding the world of the mind and how we think and make decisions about our lives. It proposes that Kant can be seen as the founder not just of theories of the problem of knowledge, but also of such modern ideas as existentialism.

In an ideal, ordered world, answering metaethical questions (such as “what is goodness?” and “how can we tell the good from the bad”) would lead to statements about morality (principles set out for making decisions, having intentions and taking actions). However, the world is not ideal or ordered, and in life principles for moral action are based on various beliefs, religions and cultures and most of all by the background of the actor him/herself. -/- This corresponds to the view of (...) the great German philosopher Frederik Nietzsche, who Simon Blackburn (Blackburn, 2005) refers to as the “arch debunker”. Blackburn rates Nietzsche as “currently the most influential of the great philosophers” and there is certainly an arguable case for that assessment. Nietzsche is regarded as the bad boy of philosophy, the writer who speaks the unspeakable. But his ideas have been taken up by philosophers who came after him like no other. His views (along with Kierkegaard’s) lead to existentialism. Heidegger based much of his writing on Nietzsche, and the questions Nietzsche raises (but does not necessarily answer) about epistemology, ethics, religion, psychology, and the way we live our lives are profound and still puzzle modern philosophers and social scientists. -/- This article reviews Nietzsche's profound thoughts on these issues. -/- . (shrink)

Of all the great philosophers, Hegel is one of the most difficult to understand, and, at least by some philosophers, one of the most despised. Russell and Schopenhauer thought that his philosophy was devoid of any useful meaning, and Popper blamed him for the rise of totalitarianism. This teaching paper aims to summarise the main points of his work and give a balanced view.

Language is what separates us from other animals, and is why we are able to solve complex logical problems, and, as far as we can tell, experience consciousness. Wittgenstein is the philosopher of language par excellence. He asks: what is the role of language in philosophy, and in the wider sphere of thinking in everyday life? This teaching paper gives a summary of his ideas.

This is an imagined dialogue about this book, which is one of the most influential but difficult works written in the twentieth century.

Much of the literature on impairment to self-governance focuses on cases in which a person either lacks the ability to protect herself from errant urges or cases in which a person lacks the capacity to initiate self-reflective agential processes. This has led to frameworks for thinking about self-governance designed with only the possibility of these sorts of impairments in mind. I challenge this orthodoxy using the case of melancholic depression to show that there is a third way that self-governance can (...) be undermined: an agent may fail to form the desire she most wants to act on. (shrink)

"On First Looking into Chapman's Homer" by John Keats, may seem archaic now, especially its language. But it expresses the poet's delight and excitement when he discovers a new literary revelation, hitherto hidden from him. He makes an intellectual discovery. I've had this sense of discovery when reading philosophy. Some new approach, some new idea, has made me see a concept I thought I understood in a different and more rigorous way; made me re- examine what I thought I'd understood (...) perfectly well before. It's not so much that the authors I was reading offered the last word on the subject, more that they offered the first word. Here are four examples. (shrink)

Wiliam Lane Craig has famously argued that without God we simply cannot have objective morality and therefore we are left with nihilism. I agree with Craig that objective morality has no logical explanation without God, but disagree that this necessarily entails that atheism is nihilistic.

In Almost Over: Aging, Dying, Dead, Frances Kamm seeks to make sense of people’s widely variant choices about which lives they would choose to continue living. She does this by defending the Prudential Prerogative, which, in analogy to the Moral Prerogative, holds that in a fairly wide range of conditions we are under no intrapersonal rational obligation to choose either to die or to live on. I argue against Kamm's case for the Prudential Prerogative in favor of Life Holism, the (...) view that you ought to live the life that would be best for you as an individual when each potential life is considered as a whole. I argue that the features of the Moral Prerogative that make it an attractive principle do not transfer to the Prudential Prerogative, and that Life Holism can better account for the perspectival and non-summative features of the normative phenomena Kamm wants to capture while retaining a tight connection between reasons and goodness. (shrink)

Lockheed Martin Corp. has funded research to generate a framework and methodology for developing semantic reasoning applications to support the discipline oflntelligence Analysis. This chapter outlines that framework, discusses how it may be used to advance the information sharing and integrated analytic needs of the Intelligence Community, and suggests a system I software architecture for such applications.

The paper takes up a traditional view that has also been a part of some recent analytic metaphysics, namely, the view that substance is to be understood in terms of independence. Taking as my point of departure some recent remarks by Kit Fine, I propose reviving the Aristotelian-scholastic idea that the sense in which substances are independent is that they are non-inherent, and I do so by developing a broad notion of inherence that is more usable in the context of (...) contemporary analytic metaphysics than the traditional notion is. I end by showing how non-inherence, while necessary for being a substance, cannot be taken as sufficient without some qualifying remarks. (shrink)

According to Christian belief, Jesus Christ is a divine person who became “incarnate,” i.e., who became human. A key event in the second act of the drama of creation and redemption, the incarnation could not have failed to interest Aquinas, and he discusses it in a number of places. A proper understanding of what he thought about it is thus part of any complete understanding of his work. It is, furthermore, a window into his ideas on a variety of other (...) topics: God, human nature, language, substance, and so on. Finally, it forces us to come to grips with what is at stake in acknowledging that Aquinas was not only a philosopher but a theologian as well. (shrink)

This article considers two related and fundamental issues about morality in a virtual world. The first is whether the anonymity that is a feature of virtual worlds can shed light upon whether people are moral when they can act with impunity. The second issue is whether there are any moral obligations in a virtual world and if so what they might be. -/- Our reasons for being good are fundamental to understanding what it is that makes us moral or indeed (...) whether any of us truly are moral. Plato grapples with this problem in book two of The Republic where Socrates is challenged by his brothers Adeimantus and Glaucon. They argue that people are moral only because of the costs to them of being immoral; the external constraints of morality. -/- Glaucon asks us to imagine a magical ring that enables its wearers to become invisible and capable of acting anonymously. The ring is in some respects analogous to the possibilities created by online virtual worlds such as Second Life, so the dialogue is our entry point into considering morality within these worlds. These worlds are three dimensional user created environments where people control avatars and live virtual lives. As well as being an important social phenomenon, virtual worlds and what people chose to do in them can shed light on what people will do when they can act without fear of normal sanction. -/- This paper begins by explaining the traditional challenge to morality posed by Plato, relating this to conduct in virtual worlds. Then the paper will consider the following skeptical objection. A precondition of all moral requirements is the ability to act. There are no moral requirements in virtual worlds because they are virtual and it is impossible to act in a virtual world. Because avatars do not have real bodies and the persons controlling avatars are not truly embodied, it is impossible for people to truly act in a virtual world. We will show that it is possible to perform some actions and suggest a number of moral requirements that might plausibly be thought to result. Because avatars cannot feel physical pain or pleasure these moral requirements are interestingly different from those of real life. Hume’s arguments for why we should be moral apply to virtual worlds and we conclude by considering how this explains why morality exists in these environments. (shrink)