Many of the papers in this volume originated in a colloquium at the University of Western Ontario in 1967. These include a paper on the logic of norms by G. H. Von Wright, a paper on the logic of questions by L. Åqvist, a paper on the logic of belief by W. Sellars, and a paper on inductive logic by R. Ackermann. The commentaries by Anderson and Sosa have been revised for the volume and a further commentary to Ackermann's paper (...) by Wesley Salmon has been added. In addition to the colloquium papers a number of further papers are published here for the first time: J. Hintikka on the semantics of propositional attitudes, R. Hilpinen on relativized modalities, C. Harrison on the unanticipated examiner and H. Smokler and M. Rohr on confirmation and translation. The volume is completed by two papers published in Synthese and a well-known paper in modal logic by Lemmon, Meredith, Meredith, Prior, and Thomas published complete with a new postscript by Prior. Although the collection is somewhat haphazard and seems to have no unifying theme, philosophers interested in these topics in philosophical logic will be thankful for the availability of the papers, both old and new.--R. H. K. (shrink)

For some of us, the defeasibility theory of knowledge remains the most plausible approach to the Gettier Problem. Epistemological fashion and faded memories notwithstanding, persuasive objections to the theory are very hard to find. The most impressive of those objections to the theory that have hitherto gone unanswered are examined and rejected here. These are objections put forward by Richard Feldman, Richard Foley, and John Turri. While these are all interesting, the objection recently put forward by Turri is, we think, (...) by far, the most serious threat to the theory that we have seen in a long time. A successful reply to it requires a surprising amount of care, as it turns out. If tenable, Turri's objection deals a devastating blow to the theory developed by Roderick Chisholm, Keith Lehrer, Peter Klein, Marshall Swain, Risto Hilpinen, John Pollock, and Paul Moser, among others. Under scrutiny, however, the threat proves illusory. It results from inattention to a crucial, but relatively subtle, aspect of.. (shrink)

The present volume is a sequel to Deontic Logic: Introductory and Systematic Readings : its purpose is to offer a view of some of the main directions of research in contemporary deontic logic. Most of the articles included in Introductory and Systematic Readings represent what may be called the standard modal approach to deontic logic, in which de on tic logic is treated as a branch of modal logic, and the normative concepts of obligation, permission and prohibition are regarded as (...) analogous to the "alethic" modalities necessity, possibility and impossibility. As Simo Knuuttila shows in his contribution to the present volume, this approach goes back to late medieval philosophy. Several 14th century philosophers observed the analogies between deontic and alethic modalities and discussed the deontic interpretations of various laws of modal logic. In contemporary deontic logic the modal approach was revived by G. H. von Wright's classic paper 'Deontic Logic'. Certain analogies between deontic and alethic modalities are obvious and uncontroversial, but the standard approach has often been criticized on the ground that it exaggerates the analogies and tends to ignore those features of normative concepts which distinguish them from other modalities. (shrink)

Risto Hilpinen; X*—Authors and Artifacts, Proceedings of the Aristotelian Society, Volume 93, Issue 1, 1 June 1993, Pages 155–178, https://doi.org/10.1093/arist.

Reason and Value collects 15 new papers by leading contemporary philosophers on themes from the work of Joseph Raz. Raz has made major contributions in a wide range of areas, including jurisprudence, political philosophy, and the theory of practical reason; but all of his work displays a deep engagement with central themes in moral philosophy. The subtlety and power of Raz's reflections on ethical topics make his writings a fertile source for anyone working in this area. Especially significant are his (...) explorations of the connections between practical reason and the theory of value, which constitute a sustained and penetrating treatment of a set of issues at the very center of moral philosophy as it is practiced today. The contributors to the volume acknowledge the importance of Raz's contributions by engaging critically with his positions and offering independent perspectives on the topics that he has addressed. The volume aims both to honour Raz's accomplishments in the area of ethical theorizing, and to contribute to an enhanced appreciation of the significance of his work for the subject. (shrink)

Peirce discusses the nature and structure of propositions in several manuscripts written in the 1890’s and during the first decade of this century. In this paper I shall outline the main features of Peirce’s theory of the proposition, especially his account of what may be called indeterminate indices in propositions.

Peirce discusses the nature and structure of propositions in several manuscripts written in the 1890’s and during the first decade of this century. In this paper I shall outline the main features of Peirce’s theory of the proposition, especially his account of what may be called indeterminate indices in propositions.

Deontic logic is an area of logic which investigates normative concepts, systems of norms, and normative reasoning. The word ‘deontic’ is derived from the Greek expression ‘déon’, which means ‘what is binding’ or ‘proper’. Thus, Jeremy Bentham used the word ‘deontology’ for “the science of morality,” and the Austrian philosopher Ernst Mally, who developed in the 1920s a system of the “fundamental principles the logic of ought,” called his theory ‘Deontik’. Normative concepts include the concepts of obligation (ought), permission (may), (...) prohibition (may not), and related notions, such as the concept of right. Systems of deontic logic contain, in addition to the usual sentential connectives and quantifiers, logical constants which represent some of these normative concepts. (shrink)

Many philosophers have used the concept of belief system or some related notion as a basic tool of epistemological discussion and analysis. A belief system is a set of propositions or statements which represents a person’s doxastic state or credal state in a certain situation; it consists of the propositions which the person either explicitly or implicitly accepts in the situation. One of the many concerns of epistemologists is to attempt to formulate general “conditions of rationality” for belief systems. I (...) want to suggest in the present paper that in this endeavour philosophers usually treat belief systems as if they were artifacts or tools made for various epistemic purposes: for providing satisfactory answers to interesting questions, for helping to find answers to new questions, and for providing resources for argumentation and research. Insofar as epistemology and philosophy of science can legitimately be viewed in this way, they may be regarded as “sciences of the artificial” in Herbert Simon’s sense, and not as sciences of the “natural world” or parts of natural science, as some proponents of “naturalised epistemology” have recently suggested. (shrink)

Charles S. Peirce introduces the distinction between a token and a type into semiotics and philosophy by using as an example two ways of individuating words:(P1) A common mode of estimating the amount of matter in a MS. or printed book is to count the number of words. There will ordinarily be about twenty the's on a page, and of course they count as twenty words. In another sense of the word "word," however, there is but one word "the" in (...) the English language; and it is impossible that this word should lie visibly on a page or be heard in any voice, for the reason that it is not a Single thing or Single event. It does not exist; it only determines things that do exist. Such a definitely significant Form, I propose.. (shrink)

In his semiotic system Peirce distinguished between two interpretants and two objects of a sign: an immediate and a dynamical interpretant, and an immediate and a dynamical object. It is argued that Peirce’s immediate object can be interpreted a qua-object which has the dynamical object as its basis, and the dynamical interpretant consists of an interpreter’s conception of the object of the sign. Peirce semiotic system is compared with the accounts given by Frege, Husserl, Meinong, and the Stoics.

Expressions of the form "s represents an F", "s represents t as G", and "s represents an F as G" are analysed by means of C. S. Peirce's and Nelson Goodman's semiotic theories, and these theories are compared with each other. It is argued that Peirce's concept of interpretant provides a plausible account of what Goodman calls the exemplification features of aesthetic signs (works of art).

Expressions of the form "s represents an F", "s represents t as G", and "s represents an F as G" are analysed by means of C. S. Peirce's and Nelson Goodman's semiotic theories, and these theories are compared with each other. It is argued that Peirce's concept of interpretant provides a plausible account of what Goodman calls the exemplification features of aesthetic signs (works of art).

In this paper practical reasoning is understood in the Aristotelian sense as reasoning leading to action or to an intention to do something. Georg Henrik von Wright and a number of other philosophers have tried to assimilate certain forms of such reasoning to deductive reasoning. Many examples of practical reasoning, including some examples given by Aristotle, do not fit a deductive or quasi‐deductive model. It is argued that instances of good practical reasoning often resemble abductive rather than deductive or inductive (...) reasoning, and that the principles governing abduction, including the Principle of Economy, are applicable to practical reasoning. (shrink)

: According to C. S. Peirce, there are two ways of explaining what a sign means, namely, a definition and a precept. A precept tells the interpreters of a sign what the sign means by prescribing what they have to do in order to find or become acquainted with an object of the sign. A precept for a concept specifies how an interpreter can determine whether the concept is applicable to a given situation or object.Peirce accepted the scholastic definition of (...) truth, according to which a proposition is true if and only if its subject and predicate refer to the same thing, and applied this analysis to complex as well as singular propositions. However, this account does not tell how an interpreter can become acquainted with the objects of the predicate "true," that is, true propositions: it is not a good precept for the concept of truth. On the other hand, the so-called pragmatic conception of truth, truth as the limit or end of inquiry, can be regarded as a precept for truth, or as a general form of such a precept.The requirement that concepts should have precepts attached to them is a version of Peirce's principle of pragmatism. The availability of precepts should make it possible for an interpreter to determine whether a concept is applicable to a given situation, or whether a given proposition is true. Thus the principle of pragmatism is closely related to the principle knowability, according to which any truth should be knowable. Some formulations of the principle of knowability lead to a paradox. The paper discusses several forms of the principle of knowability, and it is argued that the existence of precept for a proposition entails only a relatively weak form of the principle.Keywords: Action. Inquiry. Knowledge. Meaning. Peirce. Pragmatism. Precept.Resumo: Segundo C. S. Peirce, há dois modos de explicar o que um signo significa, a saber, uma definição e um preceito. Um preceito diz aos intérpretes de um signo o que o signo significa, prescrevendo o que eles devem fazer para encontrar ou inteirar-se de um objeto do signo. Um preceito para um conceito especifica como um intérprete pode determinar se o conceito é aplicável a uma dada situação ou a um dado objeto.Peirce aceitou a definição escolástica de verdade, segundo a qual uma proposição é verdadeira se, e somente se, seu sujeito e seu predicado se referirem à mesma coisa, e aplicou essa análise tanto a proposições complexas quanto a singulares. Entretanto, essa visão não informa como um intérprete pode inteirar-se dos objetos do predicado "verdadeiro", ou seja, proposições verdadeiras: não é um bom preceito para o conceito de ver- On a Pragmatic Theory of Meaning and Knowledge dade. De outro lado, a assim chamada concepção pragmática de verdade, a verdade como o limite ou fim da investigação, pode ser vista como um preceito para a verdade, ou como uma forma geral de tal preceito.A exigência de que conceitos tenham preceitos ligados a eles é uma versão do princípio do pragmatismo de Peirce . A disponibilidade de preceitos deve tornar possível que um intérprete determine se um conceito é aplicável a uma dada situação, ou seja, se certa proposição é verdadeira. Portanto, o princípio do pragmatismo está intimamente ligado ao princípio da cognoscibilidade, segundo o qual toda verdade pode ser conhecida. Algumas formulações do princípio da cognoscibilidade levam a um paradoxo. O artigo discute algumas formas não-paradoxais do princípio da cognoscibilidade, defendendo que a existência de um preceito para uma proposição exige apenas uma forma relativamente fraca do princípio.Palavras-chave: Ação. Investigação. Conhecimento. Significação. Peirce. Pragmatismo. Preceito. (shrink)