This is a major work in moral philosophy, the long-awaited follow-up to Parfit's 1984 classic Reasons and Persons, a landmark of twentieth-century philosophy. Parfit now presents a powerful new treatment of reasons and a critical examination of the most prominent systematic moral theories, leading to his own ground-breaking conclusion.

This chapter contains section titled: Introduction The Demandingness Objection Scalar Utilitarianism Wrongness as Blameworthiness Rightness and Goodness as Guides to Action.

Many philosophers hold that whether an act is overall morally obligatory is an ‘objective’ matter, many that it is a ‘subjective’ matter, and some that it is both. The idea that it is or can be both may seem to promise a helpful answer to the question ‘What ought I to do when I do not know what I ought to do?’ In this article, three broad views are distinguished regarding what it is that obligation essentially concerns: the maximization of (...) actual value, the maximization of expected value, and the perceived maximization of actual value. The first and third views are rejected; the second view is then refined and defended. The unfortunate upshot is that there may be no very helpful answer to the question just mentioned. As to the question posed in the title of the article, the answer unsurprisingly depends on what ‘objective’ and ‘subjective’ are taken to mean. (Published Online November 24 2006). (shrink)

A moral code consists of principles that assign moral status to individual actions – principles that evaluate acts as right or wrong, prohibited or obligatory, permissible or supererogatory. Many theorists have held that such principles must serve two distinct functions. On the one hand, they serve a theoretical function, insofar as they specify the characteristics in virtue of which acts possess their moral status. On the other hand, they serve a practical function, insofar as they provide an action-guide: a standard (...) by reference to which a person can choose which acts to perform and which not. Although the theoretical and practical functions of moral principles are closely linked, it is not at all obvious that what enables a principle to fill one of these roles automatically equips it to fill the other. In this paper I shall briefly examine some of the reasons why a moral principle might fail to fill its practical role, i.e., be incapable of guiding decisions. I shall then sketch three common responses to this kind of failure, and examine in some detail the adequacy of one of the most popular of these responses. (shrink)

The author identifies and defines the features of traditional utilitarian theories which account for their appeal, demonstrates that no theory which is "exclusively act-oriented" can have all the properties that ultilitarians have attempted to build into their theories, and develops a new theory "co-operative utilitarianism", which is radically different than traditional theories.

Claims about agents’ abilities—practical abilities—are common in theliterature on free will, moral responsibility, moral obligation, personalautonomy, weakness of will, and related topics. These claims typicallyignore differences among various kinds or levels of practical ability. Inthis article, using ‘A’ as an action variable, I distinguish among threekinds or levels: simple ability toA; ability toAintentionally; and a morereliable kind of ability toAassociated with promising toA. I believe thatattention to them will foster progress on the topics I mentioned. Substan-tiating that belief—by making progress (...) on these topics in light of suchattention—is a project for other occasions. My aim here is to lay a partialfoundation for that project. (shrink)

We are often uncertain how to behave morally in complex situations. In this controversial study, Ted Lockhart contends that moral philosophy has failed to address how we make such moral decisions. Adapting decision theory to the task of decision-making under moral uncertainly, he proposes that we should not always act how we feel we ought to act, and that sometimes we should act against what we feel to be morally right. Lockhart also discusses abortion extensively and proposes new ways to (...) deal with the ethical and moral issues which surround it. (shrink)

We consider a paradox involving indicative conditionals (‘ifs’) and deontic modals (‘oughts’). After considering and rejecting several standard options for resolv- ing the paradox—including rejecting various premises, positing an ambiguity or hidden contextual sensitivity, and positing a non-obvious logical form—we offer a semantics for deontic modals and indicative conditionals that resolves the paradox by making modus ponens invalid. We argue that this is a result to be welcomed on independent grounds, and we show that rejecting the general validity of modus (...) ponens is compatible with vindicating most ordinary uses of modus ponens in reasoning. (shrink)

Objectivists and perspectivists disagree about the question of whether what an agent ought to do depends on the totality of facts or on the agent’s limited epistemic perspective. While objectivism fails to account for normative guidance, perspectivism faces the challenge of explaining phenomena (occurring most notably in advice, but also in first-personal deliberation) in which the use of “ought” is geared to evidence that is better than the evidence currently available to the agent. This paper aims to defend perspectivism by (...) developing a perspectivist account that captures the phenomena in question. (shrink)

Agnes's brakes fail. Should she continue straight into the busy intersection or should she swerve into the field? Add to the story, what Agnes does not and cannot know, that continuing into the intersection will cause no harm, whereas swerving into the apparently empty field will cause a death. I evaluate arguments for the claim that she should enter the intersection, i.e. for objectivism about right and wrong; and arguments for the claim that she should swerve, i.e. for subjectivism about (...) right and wrong, and conclude that subjectivism is more plausible. I also consider the view that ‘ought’ and ‘wrong’ are systematically ambiguous, that she subjectively ought to swerve and that she objectively ought to enter the intersection. I argue that most versions of this suggestion are unworkable, and that even the best version is less plausible than pure subjectivism. (shrink)

What are the appropriate criteria for assessing a theory of morality? In this enlightening work, Brad Hooker begins by answering this question. He then argues for a rule-consequentialist theory which, in part, asserts that acts should be assessed morally in terms of impartially justified rules. In the end, he considers the implications of rule-consequentialism for several current controversies in practical ethics, making this clearly written, engaging book the best overall statement of this approach to ethics.

Act-utilitarianism and other theories in normative ethics confront the implementability problem: normal human agents, with normal human epistemic abilities, lack the information needed to use those theories directly for the selection of actions. Two Level Theories have been offered in reply. The theoretical level component states alleged necessary and sufficient conditions for moral rightness. That component is supposed to be true, but is not intended for practical use. It gives an account of objective obligation. The practical level component is offered (...) as an implementable system for the choice of actions by agents lacking some relevant information. It gives an account of subjective obligation. Several different ways of developing Two Levelism are explained and criticized. Five conditions that must be satisfied if the practical level principle is to be a good match for a given theoretical level principle are stated. A better form of Two Levelism is presented. (shrink)

A view widely held by epistemologists is that there is a distinction between subjective and objective epistemic justification, analogous to the commonly drawn distinction between subjective and objective justification in ethics. Richard Brandt offers a clear statement of this line of thought.

Utilitarians are attracted to the idea that an act is morally right iff it leads to the best outcome. But critics have pointed out that in many cases we cannot determine which of our alternatives in fact would lead to the best outcome. So we can’t use the classic principle to determine what we should do. It’s not “practical”; it’s not “action-guiding”. Some take this to be a serious objection to utilitarianism, since they think a moral theory ought to be (...) practical and action-guiding. In response, some utilitarians propose to modify utilitarianism by replacing talk of actual utility with talk of expected utility. Others propose to leave the original utilitarian principle in place, but to combine it with a decision procedure involving expected utility. What all these philosophers have in common is this: they move toward expected utility in order to defend utilitarianism against the impracticality objection. My aim in this paper is to cast doubt on this way of replying to the objection. My central claim is that if utilitarians are worried about the impracticality objection, they should not turn to expected utility utilitarianism. That theory does not provide the basis for a cogent reply to the objection. (shrink)

Moral Theory explores some of the most historically important and currently debated moral theories about the nature of the right and good. After introducing students in the first chapter to some of the main aims and methods of evaluating a moral theory, the remaining chapters are devoted to an examination of various moral theories including the divine command theory, moral relativism, natural law theory, Kant's moral theory, moral pluralism, virtue ethics, and moral particularism.

Commonsense Consequentialism is a book about morality, rationality, and the interconnections between the two. In it, Douglas W. Portmore defends a version of consequentialism that both comports with our commonsense moral intuitions and shares with other consequentialist theories the same compelling teleological conception of practical reasons. Broadly construed, consequentialism is the view that an act's deontic status is determined by how its outcome ranks relative to those of the available alternatives on some evaluative ranking. Portmore argues that outcomes should be (...) ranked, not according to their impersonal value, but according to how much reason the relevant agent has to desire that each outcome obtains and that, when outcomes are ranked in this way, we arrive at a version of consequentialism that can better account for our commonsense moral intuitions than even many forms of deontology can. What's more, Portmore argues that we should accept this version of consequentialism, because we should accept both that an agent can be morally required to do only what she has most reason to do and that what she has most reason to do is to perform the act that would produce the outcome that she has most reason to want to obtain.Although the primary aim of the book is to defend a particular moral theory, Portmore defends this theory as part of a coherent whole concerning our commonsense views about the nature and substance of both morality and rationality. Thus, it will be of interest not only to those working on consequentialism and other areas of normative ethics, but also to those working in metaethics. Beyond offering an account of morality, Portmore offers accounts of practical reasons, practical rationality, and the objective/subjective obligation distinction. (shrink)

Every choice we make is set against a background of massive ignorance about our past, our future, our circumstances, and ourselves. Philosophers are divided on the moral significance of such ignorance. Some say that it has a direct impact on how we ought to behave - the question of what our moral obligations are; others deny this, claiming that it only affects how we ought to be judged in light of the behaviour in which we choose to engage - the (...) question of what responsibility we bear for our choices. Michael Zimmerman claims that our ignorance has an important bearing on both questions, and offers an account of moral obligation and moral responsibility that is sharply at odds with the prevailing wisdom. His book will be of interest to a wide range of readers in ethics. (shrink)

There is a debate in normative ethics about whether or not our moral obligations depend solely on either our evidence concerning, or our beliefs about, the world. Subjectivists maintain that they do and objectivists maintain that they do not. I shall offer some arguments in support of objectivism and respond to the strongest argument for subjectivism. I shall also briefly consider the significance of my discussion to the debate over whether one’s future voluntary actions are relevant to one’s current moral (...) obligations. (shrink)

It seems that the debate between objective and subjective consequentialists might be resolved by appealing to the ought implies can principle. Howard-Snyder has suggested that if one does not know how to do something, cannot do it, and thus one cannot have an obligation to do it. I argue that this depends on an overly rich conception of ability, and that we need to look beyond the ought implies can principle to answer the question. Once we do so, it appears (...) that Prichard might have been at least partly right when he claimed that obligations are tryings. I go some way to defending a diluted version of Prichard's view. (shrink)