Hallvard Lillehammer

Recent work in English speaking moral philosophy has seen the rise to prominence of the idea of a normative reason1. By ‘normative reasons’ I mean the reasons agents appeal to in making rational claims on each other. Normative reasons are good reasons on which agents ought to act, even if they are not actually motivated accordingly2. To this extent, normative reasons are distinguishable from the motivating reasons agents appeal to in reason explanations. Even agents who fail to act on their normative reasons can be said to act on reasons insofar as their actions are rationally intelligible. Thus, when it is said that agents may never use violence in self-defence, this is naturally interpreted to mean that there are powerful normative reasons not to use violence even in selfdefence, even though some agents would use violence in selfdefence. Normative reasons are reasons to pursue ends, where by ends I mean a subset of objects of possible desire, such as taking a stroll or giving all your money to charity. The set of objects of possible desire might include items that are not straightforwardly ends of action. For example, you might want the world to be a better place, or want a secure basis in knowledge of relevant facts to be assigned the highest priority in the assessment of people’s preferences. Objects of possible desire are a subset of objects of possible response, where by ‘response’ I mean the whole range of prepositional attitudes, including desires, preferences, beliefs, commitments and so on. I use the term ‘option’ to refer to objects of possible response in this wider sense. Recent philosophical claims about the grounds of normative reasons can be divided into two strands. Each strand takes as its starting point what is perceived to be a fundamental constraint embodied in normative reason attributions..

The paper examines the plausibility of analytical dispositionalism about practical reason, according to which the following claims are conceptual truths about common sense ethical discourse: i) Ethics: agents have reasons to act in some ways rather than others, and ii) Metaphysical Modesty: there is no such thing as a response independent normative reality. By elucidating two uncontroversial assumptions which are fundamental to the common sense commitment to ethics, I argue that common sense ethical discourse is most plausibly construed as committed to the denial of metaphysical modesty, and thereby as committed to the existence of a response independent normative reality.

In recent years there has been a growing interest among mainstream Anglophone moral philosophers in the empirical study of human morality, including its evolution and historical development. This chapter compares these developments with an earlier point of contact between moral philosophy and the moral sciences in the early decades of the Twentieth century, as manifested in some of the less frequently discussed arguments of G. E. Moore and W. D. Ross. It is argued that a critical appreciation of Moore and Ross’s response to the emerging moral sciences of their day has significant implications for contemporary moral epistemology. The chapter also offers a novel interpretation of G. E. Moore’s ‘open question argument’.

The paper explores the consequences of adopting a moral error theory targeted at the notion of reasonable convergence. I examine the prospects of two ways of combining acceptance of such a theory with continued acceptance of moral judgements in some form. On the first model, moral judgements are accepted as a pragmatically intelligible fiction. On the second model, moral judgements are made relative to a framework of assumptions with no claim to reasonable convergence on their behalf. I argue that the latter model shows greater promise for an error theorist whose commitment to moral thought is initially serious

The paper distinguishes three strategies by means of which empirical discoveries about the nature of morality can be used to undermine moral judgements. On the first strategy, moral judgements are shown to be unjustified in virtue of being shown to rest on ignorance or false belief. On the second strategy, moral judgements are shown to be false by being shown to entail claims inconsistent with the relevant empirical discoveries. On the third strategy, moral judgements are shown to be false in virtue of being shown to be unjustified; truth having been defined epistemologically in terms of justification. By interpreting three recent error theoretical arguments in light of these strategies, the paper evaluates the epistemological and metaphysical relevance of empirical discoveries about morality as a naturally evolved phenomenon.

In this chapter I critically discuss the dismissal of the philosophical significance of facts about human evolution and historical development in the work of W. D Ross. I address Ross’s views about the philosophical significance of the emerging human sciences of his time in two of his main works, namely The Right and the Good and The Foundations of Ethics. I argue that the debate between Ross and his chosen interlocutors (Herbert Spencer, Emile Durkheim and Lucien Levy-Bruhl) shows striking similarities with parallel debates in contemporary moral philosophy.