Challenging, with several powerful arguments, some of our deepest beliefs about rationality, morality, and personal identity, Parfit claims that we have a false view about our own nature. It is often rational to act against our own best interersts, he argues, and most of us have moral views that are self-defeating. We often act wrongly, although we know there will be no one with serious grounds for complaint, and when we consider future generations it is very hard to avoid conclusions (...) that most of us will find very disturbing. (shrink)

What knowledge would suffice to yield an interpretation of an arbitrary utterance of a language when such knowledge is based on evidence plausibly available to a nonspeaker of that language? it is argued that it is enough to know a theory of truth for the language and that the theory satisfies tarski's 'convention t' and that it gives an optimal fit to data about sentences held true, Under specified conditions, By native speakers.

This book defends the view that any adequate account of rational decision making must take a decision maker's beliefs about causal relations into account. The early chapters of the book introduce the non-specialist to the rudiments of expected utility theory. The major technical advance offered by the book is a 'representation theorem' that shows that both causal decision theory and its main rival, Richard Jeffrey's logic of decision, are both instances of a more general conditional decision theory. The book solves (...) a long-standing problem for Jeffrey's theory by showing for the first time how to obtain a unique utility and probability representation for preferences and judgements of comparative likelihood. The book also contains a major new discussion of what it means to suppose that some event occurs or that some proposition is true. The most complete and robust defence of causal decision theory available. (shrink)

How to Argue about . Bibliographic Info. Citation. How to Argue about ; Author(s): R. Jay Wallace; Source: Mind , New Series, Vol.

Christine Korsgaard has become one of the leading interpreters of Kant's moral philosophy. She is identified with a small group of philosophers who are intent on producing a version of Kant's moral philosophy that is at once sensitive to its historical roots while revealing its particular relevance to contemporary problems. She rejects the traditional picture of Kant's ethics as a cold vision of the moral life which emphasises duty at the expense of love and value. Rather, Kant's work is seen (...) as providing a resource for addressing not only the metaphysics of morals, but also for tackling practical questions about personal relations, politics, and everyday human interaction. This collection contains some of the finest current work on Kant's ethics and will command the attention of all those involved in teaching and studying moral theory. (shrink)

Many economic problems are also ethical problems: should we value economic equality? how much should we care about preserving the environment? how should medical resources be divided between saving life and enhancing life? This book examines some of the practical issues that lie between economics and ethics, and shows how utility theory can contribute to ethics. John Broome's work has, unusually, combined sophisticated economic and philosophical expertise, and Ethics Out of Economics brings together some of his most important essays, augmented (...) with an updated introduction. The first group of essays deals with the relation between preference and value, the second with various questions about the formal structure of good, and the concluding section with the value of life. This work is of interest and importance for both economists and philosophers, and shows powerfully how economic methods can contribute to moral philosophy. (shrink)

This book is a major contribution to decision theory, focusing on the question of when it is rational to accept scientific theories. The author examines both Bayesian decision theory and confirmation theory, refining and elaborating the views of Ramsey and Savage. He argues that the most solid foundation for confirmation theory is to be found in decision theory, and he provides a decision-theoretic derivation of principles for how many probabilities should be revised over time. Professor Maher defines a notion of (...) accepting a hypothesis, and then shows that it is not reducible to probability and that it is needed to deal with some important questions in the philosophy of science. A Bayesian decision-theoretic account of rational acceptance is provided together with a proof of the foundations for this theory. A final chapter shows how this account can be used to cast light on such vexed issues as verisimilitude and scientific realism. (shrink)

This study uses techniques from economics to illuminate fundamental questions in ethics, particularly in the foundations of utilitarianism. Topics considered include the nature of teleological ethics, the foundations of decision theory, the value of equality and the moral significance of a person's continuing identity through time.

According to epistemological internalism, the rationality of a belief supervenes purely on "internal facts" about the thinker's mind. But what are "internal facts"? Why does the rationality of a belief supervene on them? The standard answers are unacceptable. This paper proposes new answers. "Internal facts" are facts about the thinker's nonfactive mental states. The rationality of a belief supervenes on such internal facts because we need rules of belief revision that we can follow directly, not by means of following any (...) other rules, and the proximate explanation of any belief revision always consists of such internal facts. (shrink)

Both these ideas are intuitively plausible: rationality has an external aim, such as forming a true belief or good decision; and the rationality of a belief or decision is determined purely by facts about the thinker’s internal mental states. Unlike earlier conceptions, the conception of rationality presented here explains why these ideas are both true. Rational beliefs and decisions, it is argued, are those that are formed through the thinker’s following ‘rules of rationality’. Some rules count as rules of rationality (...) because it is rational to believe---through following other rules---that those rules are reliable. But there must also be certain basic rules, which are a priori, or ‘built into’ our basic cognitive capacities. That these rules are a priori is a purely internal matter; and in following these rules the thinker has done all that could reasonably be expected to achieve the external aim of forming a true belief or good decision. (shrink)

According to the anti-Humean theory of motivation, it is possible to be motivated to act by reason alone. According to the Humean theory of motivation, this is impossible. The debate between these two theories remains as vigorous as ever (see for example Pettit 1987, Lewis 1988, Price 1989 and Smith 1994). In this paper I shall argue that the anti-Humean theory of motivation is incompatible with a number of prominent recent theories of content. I shall focus on causal or informational (...) theories of content (such as Dretske 1981, Fodor 1990 and Stalnaker 1984), and on verificationist theories of content (such as Dummett 1993, Putnam 1983 and Wright 1986), though in fact I believe that the same argument applies to several other theories of content as well. (shrink)

The fundamental principle of practical reasoning (if there is such a thing) must be a rule which we ought to follow in all our practical reasoning, and which cannot lead to irrational decisions. It must be a rule that it is possible for us to follow directly - that is, without having to follow any other rule of practical reasoning in order to do so. And it must be a basic principle, in the sense that the explanation of why we (...) rationally ought to follow this rule lies purely in the structure of our rational capacities themselves (and not, for example, in empirical evidence that we merely happen to have). This fundamental principle, it is argued, requires that you decide to do something only if the basis of your decision is such that (i) it is rational for you to believe that you have given the matter enough thought, and (ii) your actual deliberation does not warrant the conclusion that the chosen option is definitely worse than some other option that you have considered. A decision formed through reasoning is rational if and only if the agent followed this rule in making the decision. The claim that this is the fundamental principle of practical reasoning conflicts with Hobbesian approaches because it implies that practical reasoning aims not only at satisfying desires, but at forming beliefs about which options are better than others. It conflicts with Kantian approaches because it implies that to think of something as a good thing to do is not just to think of it as a rational thing to choose. This account also shows how to solve some famous controversies surrounding practical reason: the key is to understand how the rationality of concluding that one option is better than another is affected by our desires, our estimates of probabilities, and our moral judgments. (shrink)

This paper outlines a new approach to the task of giving an account of the meaning of moral statements: a sort of "conceptual role semantics", according to which the meaning of moral terms is given by their role in practical reasoning. This role is sufficient both to distinguish the meaning of any moral term from that of other terms, and to determine the property or relation (if any) that the term stands for. The paper ends by suggesting reasons for regarding (...) this "conceptual role semantics" approach as preferable to noncognitivism, the causal theory of reference, and noncircular conceptual analysis. (shrink)

In der "Kritik der praktischen Vernunft" (1787) begründet Kant seinen wohl bekanntesten Lehrsatz, den Kategorischen Imperativ: "Handle so, daß die Maxime deines Willens jederzeit zugleich als Prinzip einer allgemeinen Gesetzgebung gelten könne". Das Bewußtsein dieses Grundgesetzes der praktischen Vernunft ist nach Kant ein "Faktum der reinen Vernunft", dem sich niemand verschließen kann, und in diesem Faktum sieht er den - nicht weiter herleitbaren und keiner weiteren Herleitung bedürftigen - Beweisgrund der Wirklichkeit unserer Freiheit, den die "Kritik der reinen Vernunft" auf (...) dem Felde der theoretischen Vernunft zwar fordern, aber nicht beibringen konnte. Neben den Schriften David Humes, der sich um eine empirische Begründung allgemeingültiger ethischer Grundsätze bemühte, gilt Kants Ansatz eines rein rational begründeten für jedermann verbindlichen Moralgesetzes bis auf den heutigen Tag als ein starkes und maßgebliches Argument für die Grundlegung einer rationalen Kriterien genügenden und daher allgemein verbindlichen Ethik. Diese Neuausgabe des Textes hält sich strikt an die Fassung der ersten Ausgabe von 1787, d.h. Lautstand, Diktion und die - typisch Kantische - Interpunktion des Originals werden auch dort bewahrt, wo sie heutigen Regeln nicht mehr entsprechen. Lediglich veraltete orthographische Schreibungen und offensichtliche Fehler in der Interpunktion wurden korrigiert, da sie die Lesbarkeit des Textes unnötig erschweren. Lesarten und Korrekturvorschläge späterer Ausgaben sowie die Eintragungen in Kants Handexemplar wurden berücksichtigt oder angemerkt, soweit sie nach dem Stand der neueren Kantforschung noch Beachtung verdienen, und im kritischen Apparat ausgewiesen. Die Einleitung gibt Auskunft über die Entstehung und die Verortung der Schrift in Kants Gesamtwerk und ihre Rezeption, Sachanmerkungen, Register und eine ausführliche Bibliographie geben weitere Hilfen zur Erschließung der Bedeutung des Werkes. (shrink)