Kantian respect for persons is based on the special status and dignity of humanity. There are, however, at least three distinct kinds of interpretation of the principle of respect for the dignity of persons: the contractualist conception, the substantive conception and the direct conception. Contractualist theories are the most common and familiar interpretation. The contractualist assumes that some form of consent or agreement is the crucial factor that is required by respect for persons. The substantive conceptions of dignity, on the other hand, treat the concept of dignity as a substantive value that justifies a deontological conception of respect for persons. A third conception of respect for the dignity of persons, the conception that I favor, focuses directly on the special value of our rational nature. According to this consequentialist conception, we respect the dignity of persons by promoting the flourishing of rational nature.

The author argues that only when the two harms are morally relevant to one another may an agent take into account the number of people he can save. He defends an orbital conception of morally relevant harm, according to which harms that fall within the ‘orbit’ of a given harm are relevant to it, while all other harms are not. The possibility of preventing a harm provides both a first-order reason to prevent that harm, and a second-order reason not to consider preventing irrelevant harms. This understanding of a morally relevant harm avoids two objections to such a concept recently raised by Alastair Norcross: identifying a point along a continuous scale of harms at which the divide between relevant and irrelevant harms occurs, and the entailment that the mere possibility of preventing harm that one is morally forbidden from preventing can determine which of two other actions morality requires.

How much are we morally required to do to aid others? After articulating some of the main contributions to this debate, I defend the position that we are sometimes morally permitted to spend our time and resources satisfying our own interests and needs rather than using them to aid others who are in desperate need. I argue that the duty to aid the needy should not always take priority over every other end we have. Whatever else we value, we most highly value the ability and opportunity to live our lives on our own terms; this grounds both our obligation to aid others and places limits on how far these obligations ought to extend. Persons ought to respect others and fulfill their moral obligations but they must also be given the moral space to set ends and pursue those ends just because they are theirs.

In recent years, many non-consequentialists such as Frances Kamm and Thomas Scanlon have been puzzling over what has come to be known as the Number Problem, which is how to show that the greater number in a rescue situation should be saved without aggregating the claims of the many, a typical kind of consequentialist move that seems to violate the separateness of persons. In this article, I argue that these non-consequentialists may be making the task more difficult than necessary, because allowing aggregation does not prevent one from being a non-consequentialist. I shall explain how a non-consequentialist can still respect the separateness of persons while allowing for aggregation.

In this article, I examine two of the standard objections to forms of value hedonism. The first is the common claim, most famously made by Bradley and Moore, that Mill's qualitative hedonism is inconsistent. The second is the apparent problem for quantitative hedonism in dealing with malicious pleasures. I argue that qualitative hedonism is consistent, even if it is implausible on other grounds. I then go on to show how our intuitions about malicious pleasure might be misleading.

Recent discussion of Scanlon's ‘buck-passing’ account of value, which analyses the value of X in terms of agents' reasons for having certain pro-attitudes or contra-attitudes towards X, has generated the ‘wrong kind of reason’ problem (WKR problem): this is the problem, for the buck-passing view, of being able to acknowledge that there may be good reasons for attributing final value to X that have nothing to do with the final value that X actually possesses. I briefly review some of the existing solutions offered to the WKR problem, including those by Philip Stratton-Lake and Jonas Olson, and offer a new, better one, which accommodates all the relevant cases presented in the literature.

Roger Crisp has inspired two important criticisms of Scanlon's buck-passing account of value. I defend buck-passing from the wrong kind of reasons criticism, and the reasons and the good objection. I support Rabinowicz and Rønnow-Rasmussen's dual role of reasons in refuting the wrong kind of reasons criticism, even where its authors claim it fails. Crisp's reasons and the good objection contends that the property of goodness is buck-passing in virtue of its formality. I argue that Crisp conflates general and formal properties, and that Scanlon is ambiguous about whether the formal property of a reason can stop the buck. Drawing from Wallace, I respond to Crisp's reasons and the good objection by developing an augmented buck-passing account of reasons and value, where the buck is passed consistently from the formal properties of both to the substantive properties of considerations and evaluative attitudes. I end by describing two unresolved problems for buck-passers.