This paper is a survey of the supervenience challenge to non-naturalist moral realism. I formulate a version of the challenge, consider the most promising non-naturalist replies to it, and suggest that no fully effective reply has yet been given.

Surprisingly, many ethical realists and anti-realists, naturalists and not, all accept some version of the following normative appeal to the natural (NAN): evaluative and normative facts hold solely in virtue of natural facts, where their naturalness is part of what fits them for the job. This paper argues not that NAN is false but that NAN has no adequate non-parochial justification (a justification that relies only on premises which can be accepted by more or less everyone who accepts NAN) to (...) back up this consensus. I show that we cannot establish versions of NAN which are interesting in their own right (and not merely as instances of a general naturalistic ontology) by appealing to the nature of natural properties or the kind of in-virtue-of relation to which NAN refers, plus other plausible nonparochial assumptions. On the way, I distinguish different types of 'in virtue of claims. I conclude by arguing that the way in which assessment of meta-ethical hypotheses is theory-dependent predicts the failure of non-parochial justifications of NAN. (shrink)

It is generally believed that moral reductionism is immune from notorious problems in moral metaphysics and epistemology, such as the problem of moral explanation – it is at least on this dimension that moral reductionism scores better than moral anti- reductionism. However, in this article I reject this popular view. First, I argue that moral reductionism fails to help vindicate the explanatory efficacy of moral properties because the reductionist solution is either circular or otiose. Second, I attempt to show that (...) a successful vindication, if any, of moral explanation requires moral-descriptive irreducibility. My discussion thus raises an explanatory challenge to moral reductionism. (shrink)

The aim of this paper is to assess the relationship between anti-physicalist arguments in the philosophy of mind and anti-naturalist arguments in metaethics, and to show how the literature on the mind-body problem can inform metaethics. Among the questions we will consider are: (1) whether a moral parallel of the knowledge argument can be constructed to create trouble for naturalists, (2) the relationship between such a "Moral Knowledge Argument" and the familiar Open Question Argument, and (3) how naturalists can respond (...) to the Moral Twin Earth argument. We will give particular attention to recent arguments in the philosophy of mind that aim to show that anti-physicalist arguments can be defused by acknowledging a distinctive kind of conceptual dualism between the phenomenal and the physical. This tactic for evading anti-physicalist arguments has come to be known as the Phenomenal Concept Strategy. We will propose a metaethical version of this strategy, which we shall call the `Moral Concept Strategy'. We suggest that the Moral Concept Strategy offers the most promising way out of these anti-naturalist arguments, though significant challenges remain. (shrink)

The core doctrine of ethical intuitionism is that some of our ethical knowledge is non-inferential. Against this, Sturgeon has recently objected that if ethical intuitionists accept a certain plausible rationale for the autonomy of ethics, then their foundationalism commits them to an implausible epistemology outside ethics. I show that irrespective of whether ethical intuitionists take non-inferential ethical knowledge to be a priori or a posteriori, their commitment to the autonomy of ethics and foundationalism does not entail any implausible non-inferential knowledge (...) in areas outside ethics (such as the past, the future, or the unobservable). However, each form of intuitionism does require a controversial stand on certain unresolved issues outside ethics. (shrink)

In this paper, I propose a critique of the naturalist version of the Desire-Based Reasons Model. I first set the scene by spelling out the connection between naturalism and the Model. After this, I introduce Christine Korsgaard’s circularity argument against what she calls the instrumental principle. Since Korsgaard’s targets, officially, were non-naturalist advocates of the principle, I show why and how the circularity charge can be extended to cover the naturalist Model. Once this is done, I go on to investigate (...) in some detail the different ways of responding to the circularity challenge. I argue that none of these responses succeed, at least not without serious costs to their advocates. I then end the paper with a brief summary and some concluding remarks. (shrink)

Metaethical realists disagree about the nature of normative properties. Naturalists think that they are ordinary natural properties: causally efficacious, a posteriori knowable, and usable in the best explanations of natural and social sciences. Non-naturalist realists, in contrast, argue that they are sui generis: causally inert, a priori knowable and not a part of the subject matter of sciences. It has been assumed so far that naturalists can explain causally how the normative predicates manage to refer to normative properties, whereas non-naturalists (...) are unable to provide equally satisfactory metasemantic explanations. This article first describes how the previous non-naturalist accounts of reference fail to tell us how the normative predicates could have come to refer to the non-natural properties rather than to the natural ones. I will then use the so-called qua-problem to show how the causal theories of reference of naturalists also fail to fix the reference of normative predicates to unique natural properties. Finally, I will suggest that, just as naturalists need to rely on the non-causal mechanism of reference magnetism to solve the previous problem, non-naturalists, too, can rely on the very same idea to respond to the pressing metasemantic challenges that they face concerning reference. (shrink)

This chapter offers an introduction to naturalist views in contemporary metaethics. Such views attempt to find a place for normative properties (such as goodness and rightness) in the concrete physical world as it is understood by both science and common sense. The chapter begins by introducing simple naturalist conceptual analyses of normative terms. It then explains how these analyses were rejected in the beginning of the 20th Century due to G.E. Moore’s influential Open Question Argument. After this, the chapter considers (...) what good general reasons there are for defending naturalism in metaethics. The bulk of the chapter will then survey new semantic and metaphysical forms of naturalism which in different ways attempt to address Moore’s objection to naturalism. These more recent versions of naturalism—using new resources from philosophy of language, philosophy of mind, metaphysics, philosophy of science and epistemology—attempt to explain why the Open Question Argument fails. (shrink)

Nonnaturalist realism is the view that normative properties are unique kind of stance-independent properties. It has been argued that such views fail to explain why two actions that are exactly alike otherwise must also have the same normative properties. Mark Schroeder and Knut Olav Skarsaune have recently suggested that nonnaturalist realists can respond to this supervenience challenge by taking the primary bearers of normative properties to be action kinds. This paper develops their response in two ways. First, it provides additional (...) motivation for the previous claim about the bearers of normative properties by drawing from the work of H. A. Prichard. Second, and more importantly, it formulates a plausible metaphysical framework based on the contemporary trope theory to explain why action kinds would have their second-order properties, including their normative properties, necessarily. (shrink)

An increasing number of moral realists and anti-realists have recently attempted to support their views by appeal to science. Arguments of this kind are typically criticized on the object-level. In addition, however, one occasionally also comes across a more sweeping metatheoretical skepticism. Scientific contributions to the question of the existence of objective moral truths, it is claimed, are impossible in principle; most prominently, because such arguments impermissibly derive normative from descriptive propositions, such arguments beg the question against non-naturalist moral realism, (...) science cannot inform conceptual accounts of moral judgements, and the conceptual is logically prior to the empirical. My main aim in this paper is to clarify and critically assess these four objections. Moreover, based on this assessment, I will formulate four general requirements that science-based arguments in favor of moral realism and anti-realism should meet. It will turn out that these arguments are limited in several ways, and that some existing arguments have been unsound. Yet it is still possible in principle for the empirical sciences to contribute to the moral realism/anti-realism debate. (shrink)

Consider normative properties and facts, such as facts consisting in something's being what you ought to do, or the property of being morally wrong. Normative naturalism is the view that normative properties and facts such as these exist, and that they are natural properties and facts. Some suspect, however, that normativity is incompatible with a wholly naturalistic worldview: that the normative couldn't be natural because it's somehow “just too different” from the natural. I critically examine recent forms of this “just (...) too different” objection to normative naturalism, with a view to making the debate accessible to a general philosophical audience. (shrink)

This paper raises an objection to two important arguments for reductive ethical naturalism. Reductive ethical naturalism is the view that ethical properties reduce to the properties countenanced by the natural and social sciences. The main arguments for reductionism in the literature hold that ethical properties reduce to natural properties by supervening on them, either because supervenience is alleged to guarantee identity via mutual entailment, or because non-reductive supervenience relations render the supervenient properties superfluous. After carefully characterizing naturalism and reductionism, we (...) will present, explain, and raise objections against each of the main reductionist arguments: that supervenience does not support the claim that ethical properties and their subvenient natural properties are mutually entailing; that reductive views undermine the claim that ethical properties yield resemblance; and that supervenience does not entail that non-descriptive ethical properties are superfluous in the most fundamental sense. (shrink)

This paper starts by addressing some objections to the very idea of aggregate social good. The paper goes on to review the case for letting aggregate social good be not only morally relevant but also sometimes morally decisive. Then the paper surveys objections to letting aggregate social good determine personal or political decisions. The paper goes on to argue against the idea that aggregate good is sensitive to desert and the idea that aggregate good should be construed as incorporating agent-relativity.

This paper starts by addressing some objections to the very idea of aggregate social good. The paper goes on to review the case for letting aggregate social good be not only morally relevant but also sometimes morally decisive. Then the paper surveys objections to letting aggregate social good determine personal or political decisions. The paper goes on to argue against the idea that aggregate good is sensitive to desert and the idea that aggregate good should be construed as incorporating agent-relativity.

To enhance the plausibility of naturalistic moral realism, David Copp develops an argument from epistemic defeaters aiming to show that strongly a priori synthetic moral truths do not exist. In making a case for the non-naturalistic position, I locate Copp’s account within the wider literature on peer disagreement; I identify key points of divergence between Copp’s doctrine and conciliatorist doctrines; I introduce the notion of ‘minimal moral competence’; I contend that some plausible benchmarks for minimal moral competence are grounded in (...) substantive moral considerations; and I discuss two forms of spinelessness that Copp’s moral naturalism could result in. (shrink)

Moral realists often assume that folk intuitions are predominantly realist, and they argue that this places the burden of proof on antirealists. More broadly, appeals to intuition in metaethics typically assume that folk judgments are generally consistent across individuals, such that they are at least predominantly something, if not realist. A substantial body of empirical work on moral objectivism has investigated these assumptions, but findings remain inconclusive due to methodological limitations. Objectivist judgments classify individuals into broad categories of realism and (...) antirealism, but they do not address more specific conflicts in the metaethical literature between different types of realism and antirealism, such as between nonnaturalism and divine command theory, or between noncognitivism and error theory. Further, the data currently show that the folk are objectivists about some moral claims but not others, raising questions that have not been addressed in previous studies about how much of the moral domain is judged to be objective, and about how endorsements of different types of realism and antirealism are distributed among different types of moral claims. Here, I present a new survey that addresses these limitations. The results challenge both of the empirical assumptions identified above, with important implications for metaethical methodology. (shrink)

Despite having occupied a peripheral position in contemporary metaethics, moral nonnaturalism has recently experienced a revival of sorts. But what is moral nonnaturalism? And what is there to be said in favor of it? In this article, I address these two questions. In the first place, I offer an account of what moral nonnaturalism is. According to the view I propose, nonnaturalism is better viewed not as a position, but as a theoretical stance. And, second, I critically engage with three (...) recent arguments for moral nonnaturalism offered by Russ Shafer-Landau, Kit Fine, and Jean Hampton, respectively. (shrink)

Recently, some philosophers have attempted to escape familiar challenges to orthodox nonnaturalist normative realism by abandoning the robust metaphysical commitments of the orthodox view. One such view is the ‘Non-Metaphysical Non-Naturalism’ or ‘Non-Realist Cognitivism’ proposed by Derek Parfit and a few others. The trouble is that, as it stands, Non-Realist Cognitivism seems unable to provide a substantive non-trivial account of the meaning and truth conditions of moral claims. The paper considers various strategies one might use to address the challenge. There (...) is a rich field of views that are cognitivist and non-realist. But the paper is skeptical of the prospects of Non-Realist Cognitivism. (shrink)

Max Horkheimer does not generally receive the scholarly attention given to other ‘Frankfurt School’ figures. This is in part because his early work seems contradictory, or unphilosophical. For example, Horkheimer seems, at various points (to use contemporary metaethical terms), like a constructivist, a moral realist, or a moral skeptic, and it is not clear how these views cohere. The goal of this article is to show that the contradictions regarding moral theory exist largely on the surface, and that one can (...) go below the surface to reconstruct a coherent position. Part I will examine Horkheimer’s skeptical critique of morality, and show that it leads to the realist position discussed in part II. Part III then shows that such realism can only be understood within a larger constructivist project, which elaborates on a minimal normativity present in human experience. This reconstruction should make sense of Horkheimer’s work, and show its contemporary relevance. (shrink)

It has seemed, to many, that there is an important connection between the ways in which some theoretical posits explain our observations, and our reasons for being ontologically committed to those posits. One way to spell out this connection is in terms of what has become known as the explanatory criterion of ontological commitment. This is, roughly, the view that we ought to posit only those entities that are indispensable to our best explanations. Our primary aim is to argue that (...) the moral nonnaturalist places herself in an invidious position if she simply accepts that the nonnatural moral facts that she posits are not explanatory. Instead, we offer the nonnaturalist an alternative strategy for dealing with moral explanations. The strategy is to retain the explanatory criterion of ontological commitment and maintain that moral properties are, in fact, explanatory. The explanations they provide are not causal explanations; instead, moral properties make a non-causal difference to the physical facts. (shrink)

The main aim of this thesis is to defend moral realism. In chapter 1, I argue that moral realism is best understood as the view that moral sentences have truth-value, there are moral properties that make some moral sentences true, and moral properties are not reducible to non- moral properties. Realism is contrasted with non-cognitivism, error-theory and reductionism, which, in brief, deny, and, respectively. In the introductory chapter, it is also argued that there are some prima facie reasons to assume (...) that non-cognitivism and error-theory are erroneous. In chapters 2 and 3, I suggest that the two main forms of reductionism, analytic and synthetic reductionism, are mistaken. In chapter 4, I argue that the considerations in the previous chapters in relation to non-cognitivism, error-theory and reductionism provide support to moral realism. It is also suggested that these considerations make it plausible to hypothesise that moral properties depend on non- moral properties in a way I refer to as ‘the realist formula’. The realist formula confirms moral realism since it implies that moral properties are not reducible to non- moral properties. In chapters 5, 6 and 7, I argue that moral realism, much owing to the realist formula, is able to explain significant meta-ethical issues regarding moral disagreement, moral reason and moral motivation. Among other things, externalism concerning moral motivation is defended. The explanatory value of moral realism in relation to these meta-ethical issues is taken to suggest that this view is preferable to non-cognitivism, error-theory and reductionism. Some of the meta-ethical issues discussed in these chapters, particularly moral disagreement and motivation, have been thought to provide support to non-cognitivism and error-theory. I maintain that since realism, unlike reductionism, is able to counter these arguments, it justifies us in upholding the view that moral sentences have truth-value and the view that there are moral properties. In chapter 8, various objections against realism with regard to the dependence of moral properties on non- moral properties are responded to. In chapter 9, I consider an influential argument to the effect that moral properties are not involved in causal explanations. I maintain that this argument fails and that it therefore is reasonable to assume that moral properties are natural properties. However, the discussions in chapters 8 and 9 also suggest that moral realism might face problems that cannot be thoroughly discussed in this thesis. (shrink)

Metaethics, understood as a distinct branch of ethics, is often traced to G. E. Moore's 1903 classic, Principia Ethica. Whereas normative ethics is concerned to answer first order moral questions about what is good and bad, right and wrong, metaethics is concerned to answer second order non-moral questions about the semantics, metaphysics, and epistemology of moral thought and discourse. Moore has continued to exert a powerful influence, and the sixteen essays here represent the most up-to-date work in metaethics after, and (...) in some cases directly inspired by, the work of Moore. (shrink)

Moral realists often disagree about the nature of moral properties. These properties can be natural (as per naturalistic moral realism) or non-natural. But it is unclear how we should understand the notion of naturalness employed in these discussions. In this paper I propose a novel account of moral naturalness. I suggest that a property F is natural iff F falls within the scope of a natural law. In turn, a law is natural when it figures in a nomic nexus involving (...) the laws of physics. (shrink)

Biological research has the capacity to inform ethical discussions. There are numerous questions about the nature of sexual orientation, intelligence, gender identity, etc., and many of these questions are commonly approached with the benefit of implicit or explicit biological commitments. The answers to these sorts of questions can have a powerful impact on social, ethical, and political positions. In this project I examine the prospect of naturalizing ethics under the umbrella of developmental systems theory (DST). If one is committed to (...) DST, then those ideas involved in DST that steer biological research will also have implications for ethics. There has been much debate over whether certain human traits or attributes are the consequence of nature or nurture. This kind of question tends to be articulated in dichotomous terms where the focal point of the discussion is over which opposing causal mechanism asserts the most power over the development of these attributes. The debate places particular importance on such distinctions as that between gene and environment, and biology and culture. DST seeks to dismiss such dichotomous accounts. In this sense, DST is an attempt to do biology without these dichotomies. In the process, DST articulates a reconceptualized notion of "the natural." I am interested in how DST’s reconceptualization of the natural can inform a naturalistic approach to ethics. Thus, the aim of this project is to examine the ramifications of taking DST as a guiding principle in the naturalization of ethics. (shrink)

My aim is to challenge recent attempts at reconciling moral realism and naturalism by pushing ethical naturalists into a dilemma. According to one horn of the dilemma, ethical naturalists must either build unique facts and properties about divergent social structures into their subvenient sets of natural facts and properties, and so jeopardize the objectivity of moral truths, or insist, in the face of all possible worlds in which people have different moral beliefs than ours, that they are all mistaken—this despite (...) the fact that the belief-forming mechanism responsible for their moral beliefs was never concerned with the truth of those beliefs in the first place. This will bring me to suggest that moral properties might only weakly supervene upon natural phenomena. But, according to the other horn of the dilemma, weak supervenience is a defeater for moral knowledge. (shrink)

This thesis defends a hedonistic theory of value consisting of two main components. Part 1 offers a theory of pleasure. Pleasures are experiences distinguished by a distinct phenomenological quality. This quality is attitudinal in nature: it is the feeling of liking. The pleasure experience is also an object of this attitude: when feeling pleasure, we like what we feel, and part of how it feels is how this liking feels: Pleasures are Internally Liked Experiences. Pleasure plays a central role in (...) the motivational system such that pleasure tends to influence, and in turn be influenced by, other motivational, dispositional and evaluative states of the agent. While this connection is strong, it is often indirect and contingent - the necessary attitudinal connection is a matter of how pleasure feels, not of how it functions. -/- Part 2 is concerned with the nature of value. What kind of problem is it that value poses, and what ought a theory of value to do? In face of the fundamental disagreements that persist over these questions, we try to gather and systemize what we can agree upon about value, and then develop a theory that accounts for (enough of) those things. Meta-ethical naturalism, as developed here, is the view that value is a natural property, identified via the role “value” plays according to the best systematization of moral and evaluative thought. The theory engaging meta-ethics with the scientific investigation of matters relevant to value: we need to understand the causal processes behind our beliefs in order to make an informed decision about which of the competing theories offers the best explanation of value. Finally, the argument is made that the nature and function of pleasure shows it to play the kind of explanatory role necessary for a sound naturalistic reduction of value: it makes many of our beliefs about value true, and it is causally responsible for most of our attributions and beliefs about value. (shrink)

Normative naturalism is primarily a metaphysical doctrine: there are normative facts and properties, and these fall into the class of natural facts and properties. Many objections to naturalism rely on additional assumptions about language or thought, but often without adequate consideration of just how normative properties would have to figure in our thought and talk if naturalism were true. In the first part of the paper, I explain why naturalists needn’t think that normative properties can be represented or ascribed in (...) wholly non-normative terms. If so, certain prominent objections to normative naturalism fail. In the second part, I consider the objection that normative properties are “just too different” from (other) natural properties to themselves be natural properties. I argue that naturalists have no distinctive trouble making sense of thought and talk involving forms of “genuine” or “authoritative” normativity which can drive a non-question-begging form of the objection. (shrink)

Frank Jackson has famously argued that there is no logical space for the view which understands moral properties as non-natural properties of their own unique kind. His argument is based on two steps: firstly, given supervenience and truth-aptness of moral claims, it is always possible to find a natural property which is necessarily co-instantiated with a given moral property, and secondly that there are no distinct necessarily co-instantiated properties. I argue that this second step of the argument must rely on (...) a controversial nominalist view of properties. In contrast, if we accept universals or tropes, there is logical space also for non-natural moral properties even if they are necessarily co-instantiated with natural properties. (shrink)

This dissertation is a defence of metaphysical ethical naturalism according to which there is a moral reality which is part of the natural world. The implication of this view is that moral properties, such as moral goodness, justice, compassion and so forth are part of the natural world, and inquiries concerning these moral entities are conducted in similar empirical ways of reasoning to that in which scientific inquiries are conducted. I defend metaphysical ethical naturalism by a variety of explanationist argument (...) in the tradition of Cornell realism. I examine preceding proposals for this argument, and focus on one version of it, which I call ‘the abductive argument for moral realism’. Although there was a suggestion about the abductive argument, the argument has not been discussed enough in the literature. This dissertation is a defence and discussion about the abductive argument which has not been properly examined. The defence of the argument requires the examination of how first-order ethical theory can be developed in the similar empirical ways scientific theories are developed. This will be an attempt to show the analogy between scientific inquiries and ethical inquiries. Describing the analogy between science and ethics, I will argue that the analogy can be best explained in terms of the approximate truth of normative theory which implies the existence of mind-independent natural moral properties. (shrink)