Often, when one faces a choice between alternative actions, there are reasons both for and against each alternative. On one way of understanding these words, what one “ought to do all things considered (ATC)” is determined by the totality of these reasons. So, these reasons can somehow be “combined” or “aggregated” to yield an ATC verdict on these alternatives. First, various assumptions about this sort of aggregation of reasons are articulated. Then it is shown that these assumptions allow for the (...) proof of a “Reasons Aggregation Theorem” – parallel to John Harsanyi’s 1955 “Social Aggregation Theorem”. All reasons for action are grounded in reason-providing values; and, for every such reason-providing value, there is in principle a way of measuring how strongly this value counts against each alternative. The theorem tells us that the appropriate measure of how much reason ATC there is against each alternative is simply a weighted sum of the strengths with which these values count against that alternative; the agent ought not ATC to perform an action iff there is ATC more reason against it than against some available alternative. (shrink)

As Socrates famously noted, there is no more important question than how we ought to live. The answer to this question depends on how the reasons that we have for living in various different ways combine and compete. To illustrate, suppose that I've just received a substantial raise. What should I do with the extra money? I have most moral reason to donate it to effective charities but most self-interested reason to spend it on luxuries for myself. So, whether I (...) should live my life as I have most moral reason to live it or as I have most self-interested reason to live it depends on how these and other sorts of reasons combine and compete to determine what I have most reason to do, all things considered. This Element seeks to figure out how different sorts of reasons combine and compete to determine how we ought to live. (shrink)

In this paper, I explore how to accommodate non-consequentialist constraints with a broadly value-based conception of reasons for action. It turns out that there are two grades of non-consequentialist constraints. The first grade involves attaching ethical importance to such distinctions as the doing/allowing distinction, and the distinction between intended and unintended consequences that is central to the Doctrine of Double Effect. However, at least within the value-based framework, this first grade is insufficient to explain rights, which ground weighty reasons against (...) infringing those rights that need not be outweighed even when infringing those rights is necessary for preventing a larger number of people from having their rights infringed in the same way. Such rights form a second grade of non-consequentialist constraints: within the value-based framework, this second grade is best explained in terms of the intrinsically relational values and disvalues of interpersonal interactions and relationships. (shrink)

Deontic buck-passing aims to analyse deontic properties of acts in terms of reasons. Many authors accept deontic buck-passing, but only few have discussed how to understand the relation between reasons and deontic properties exactly. Justin Snedegar has suggested understanding deontic properties of acts in terms of both reasons and reasons to require: A is required to φ iff A has most reason to φ, and there is most reason to require A to φ. This promising proposal faces two open questions: (...) the question of why there can only be most reason to require A to φ if A has most reason to φ, and the question of what role agent-relative reasons play in generating requirements. In this paper, I address these questions and argue that the key to answering them is to reject evaluative buck-passing and accept a value-based theory of practical reasons instead. The result is a two-level theory of moral explanation: on the first level, practical reasons are explained in terms of appropriate responses to value; on the second level, deontic properties of acts are explained in terms of reasons: reasons to act as well as reasons to require. (shrink)