Clear, accurate presentation of the most important classical and contemporary theories in normative and metaethics-utilitarianism (act and rule), egoism, the categorical imperative, social contract theory, formalism, relativism (belief and conceptual), naturalism and non- naturalism, emotivism and prescriptive. Integrates thorough discussion of related concepts including justice, the will, autonomy, promises, punishment and universal law.

There are a number of concepts of common-sense morality, what one must do, what one ought to do, the supererogatory, the minimum that duty allows, the morally optional and the morally indifferent, that philosophers have been hard-pressed to represent in an integrated conceptual framework. Indeed, many philosophers have despaired at the attempt and concluded that only a fragment of these concepts belong to that fundamental sphere of morality that is the central focus of the ethicist. For example, the traditional scheme, (...) with its triad of the obligatory, the forbidden and the permissible, pigeonholes all actions into three mutually exclusive and exhaustive classes: those which are obligatory, those which are forbidden and those which are optional. Hence, at best, it can represent exactly two of the six aforementioned concepts. For from the standpoint of this scheme, what one must do and what one ought to do can't be distinguished and hence they can't both be represented. Although the morally optional can be represented, the supererogatory, one of its subclasses, cannot be represented. Furthermore, the morally indifferent, another subclass of the optional--one which is obviously disjoint from the supererogatory--cannot be represented. Finally, the minimum that duty allows finds no distinctive place in the traditional scheme. Thus, on the face of it, the traditional scheme is radically incomplete. ;I present, motivate and defend a new conceptual scheme for common-sense morality in which these concepts are represented and systematically integrated. An intuitively motivated semantic framework underpinning this conceptual scheme is also presented. Such a scheme, along with the associated semantic framework, is motivated by reflecting on the supererogationist's objections to utilitarianism and to the traditional scheme. But in addition, a new integrated network of linguistic motivations for this conceptual scheme is uncovered, one which is completely independent of supererogationistic considerations. Hence, these two separate sources of evidence for the centrality of this new scheme to our pre-theoretic thinking corroborate one another--thus jointly boosting the evidence beyond the mere sum of their separate evidential values. (shrink)

Appears to give the first model-theoretic account of both "must" and "ought" (without conflating them with one another). Some key pre-theoretic semantic and pragmatic phenomena that support a negative answer to the main title question are identified and a conclusion of some significance is drawn: a pervasive bipartisan presupposition of twentieth century ethical theory and deontic logic is false. Next, an intuitive model-theoretic framework for "must" and "ought" is hypothesized. It is then shown how this hypothesis helps to explain and (...) predict all the pre-theoretic phenomena previously observed. Next, I show that the framework hypothesized possesses additional expressive and explanatory power (e.g. derivatively predicting the existence of supererogatory and permissibly suboptimal alternatives), thus adding further confirmation that it is on the right track. (shrink)

The possibility of supererogation--doing more than one feels morally obliged to do--is denied by many thinkers.

In the latter half of this century, there have been two mostly separate threads within ethical theory, one on 'superogation', one on 'common-sense morality'. I bring these threads together by systematically reflecting on doing more than one has to do. A rich and coherent set of concepts at the core of common-sense morality is identified, along with various logical connections between these core concepts. Various issues in common-sense morality emerge naturally, as does a demonstrably productive definition of doing more than (...) one has to do. I then present an interpreted model-theoretic framework with the expressive power to generate truth-conditions for the core concepts, and the explanatory power to predict and explain the independently motivated logical connections between these concepts. The framework also has a certain heuristic power for 'discovering' substantive ethical theories that can derivatively generate the model-theoretic framework for the core concepts. Two theories discussed are expansions of traditional theories; two others, each giving pride of place to justice, are devised to resonate with more recent concerns. Methodologically, it is hoped that the approach within might suggest the possibility of bridging another gap: that between formal and informal studies of moral notions. (shrink)

In "Doing Well Enough: Toward a Logic for Common Sense Morality", Paul McNamara sets out a semantics for a deontic logic which contains the operator It is supererogatory that. As well as having a binary accessibility relation on worlds, that semantics contains a relative ordering relation, . For worlds u, v and w, we say that u w v when v is at least as good as u according to the standards of w. In this paper we axiomatize logics complete (...) over three versions of the semantics. We call the strongest of these logics DWE for Doing Well Enough. (shrink)

What I have just said strikes me as not only paradoxical but true. In what follows I shall try to show that it is not all that paradoxical and that it is true. In order to show this, and in order to discuss some important and neglected features of act and duty individuation, I shall contrast the concepts of perfect duty and imperfect duty.