Peter Railton

David Hume famously criticized rationalist theories of practical reason, arguing that reason alone is incapable of yielding action, and that some passionate element must be supplied. Contemporary theories of Humean inspiration develop a causal-explanatory model of action in terms of the joint operation of two distinct mental states: beliefs and desires, one inert and representational, the other dynamic. Such neo-Humean theories claim that since desires, unlike beliefs, are not subject to direct rational evaluation, an act can be said to be rational only in the sense that it is instrumental to realizing the agent’s desires. The historical Hume appears to have embraced a “sceptical solution” involving a more dynamic conception of belief, while admitting a default sense in which both beliefs and actions can be deemed reasonable or unreasonable.

Although the ‘naturalistic fallacy’ and the is/ought distinction have often been invoked as definitive grounds for rejecting any attempt to bring evolutionary thought to bear on ethics, they are better interpreted as warnings than as absolute barriers. Our moral concepts themselves -- e.g. the principle that ‘ought implies can’ -- require us to ask whether human psychology is capable of impartial empathetic thought and motivation characteristic of normative systems that could count as moral. As the essay by Flack and de Waal shows, evolutionary theory and evidence can help us answer the question whether the psychological ‘building blocks’ needed for morality are indeed likely to be present in a given species, including Homo sapiens. It is important, however, not to think that a positive answer to this question commits us to attributing identifiable moral concepts to actual members

An adequate theory of the nature of belief should help us explain the most obvious features of belief as we find it. Among these features are: guiding action and reasoning non-inferentially; varying in strength in ways that are spontaneously experience-sensitive; ‘aiming at truth’ in some sense and being evaluable in terms of correctness and warrant; possessing inertia across time and constancy across contexts; sustaining expectations in a manner mediated by propositional content; shaping the formation and execution of plans; generalizing spontaneously projectively; and being independent of the will and resisting instrumentalization. Using the method of ‘creature construction’, I attempt to show how we can build an attitude with these features step-by-step from simpler components, thereby avoiding the problems of regress or circularity affecting a number of influential accounts of belief.

Marx claims that his social theory is objective in the same sense as contemporary natural science. Yet his social theory appears to imply that the prevailing notion of scientific objectivity is ideological in character. Must Marx, then, either give up his claim of scientific objectivity or admit that he is engaged in a bit of ideology on behalf of his own theory? By suggesting an alternative way of understanding objectivity, an attempt is made to show that one can accept the implications of Marx's social theory and yet still hold that scientific inquiry is objective in an epistemically appropriate sense--not in spite of, but in large measure because of, the role Marx assigns science within the capitalist division of labor.

In our everyday lives we struggle with the notions of why we do what we do and the need to assign values to our actions. Somehow, it seems possible through experience and life to gain knowledge and understanding of such matters. Yet once we start delving deeper into the concepts that underwrite these domains of thought and actions, we face a philosophical disappointment. In contrast to the world of facts, values and morality seem insecure, uncomfortably situated, easily influenced by illusion or ideology. How can we apply this same objectivity and accuracy to the spheres of value and morality? In the essays included in this collection, Peter Railton shows how a fairly sober, naturalistically informed view of the world might nonetheless incorporate objective values and moral knowledge. This book will be of interest to professionals and students working in philosophy and ethics.