Repeatedly and successfully, the celebrated Harvard philosopher Robert Nozick has reached out to a broad audience beyond the confines of his discipline, addressing ethical and social problems that matter to every thoughtful person. Here Nozick continues his search for the connections between philosophy and "ordinary" experience. In the lively and accessible style that his readers have come to expect, he offers a bold theory of rationality, the one characteristic deemed to fix humanity's "specialness." What are principles for? asks Nozick. We (...) could act simply on whim, or maximize our self-interest and recommend that others do the same. As Nozick explores rationality of decision and rationality of belief, he shows how principles actually function in our day-to-day thinking and in our efforts to live peacefully and productively with each other. Throughout, the book combines daring speculations with detailed investigations to portray the nature and status of rationality and the essential role that imagination plays in this singular human aptitude. (shrink)

This long-awaited book sets out the implications of Habermas's theory of communicative action for moral theory. "Discourse ethics" attempts to reconstruct a moral point of view from which normative claims can be impartially judged. The theory of justice it develops replaces Kant's categorical imperative with a procedure of justification based on reasoned agreement among participants in practical discourse.Habermas connects communicative ethics to the theory of social action via an examination of research in the social psychology of moral and interpersonal development. (...) He aims to show that our basic moral intuitions spring from something deeper and more universal than contingent features of our tradition, namely from normative presuppositions of social interaction that belong to the repertoire of competent agents in any society. Jürgen Habermas is Professor of Philosophy at the University of Frankfurt. (shrink)

One of the most commonly observed peculiarities of the instrumental conception of rationality is that when applied in contexts of social interaction it sometimes prescribes actions that will predictably result in suboptimal outcomes. Often these outcomes could be avoided if agents were able to credibly commit themselves to refraining from exercising certain options available to them. The prisoners’ dilemma is the classic example. This problem has generated a small growth industry of attempts to modify the instrumental model in order to (...) incorporate commitments. The reason that philosophers are so attracted to this project is that it seems to offer them an opportunity to finish off the job that Socrates began, viz. to refute moral skepticism of the ‘rational egoist’ variety.1 None of this has worked very well, but enthusiasm for the project appears to continue unabated. (shrink)

In this paper, I argue that Humean theories of moral motivation appear preferable to Kantian approaches only if one assumes a broadly foundationalist conception of rational justification. Like foundationalist approaches to justification generally, Humean psychology aims to counter the regress-of-justification argument by positing a set of ultimate regress-stoppers-in this case, unmotivated desires. If the need for regress-stoppers of this type in the realm of practical deliberation is accepted, desires do indeed appear to be the most likely candidate. But if this (...) foundationalist strategy is rejected, there is no longer any reason to suppose that all motivation must be traceable to some extra-rational incentive. This clears the way for a rehabilitation of the Kantian claim that reasons for action can take the form of categorical imperatives. To illustrate this thesis, I show how a conception of practical rationality that incorporates a contextualist model of justification can be developed that treats social norms as reasons for action, without assigning any mediating role to agent desires. a theory of action of this type eliminates the gap between moral obligation and action, and so articulates the fundamental Kantian intuition that acting on the basis of moral principle-and with disregard for self-interest-is just one way of acting rationally. (shrink)

The notion of ‘revealed preference’ is unclear and should be abandoned. Defenders of the theory of revealed preference have misinterpreted legitimate concerns about the testability of economics as the demand that economists eschew reference to (unobservable) subjective states. As attempts to apply revealed-preference theory to game theory illustrate with particular vividness, this demand is mistaken.