This volume presents a series of influential essays by Paul Boghossian on the theory of content and on its relation to the phenomenon of a priori knowledge. The essays are organized under four headings: the nature of content; content and self-knowledge; knowledge, content, and the a priori; and colour concepts.

Content and Justification presents a series of essays by Paul Boghossian on the theory of content and on its relation to the phenomenon of a priori knowledge. Part one comprises essays on the nature of rule-following and its relation to the problem of mental content; on the intelligibility of eliminativist views of the mental; on the prospects for a naturalistic reduction of mental content; and on the currently influential view that meaning is a normative notion. Part two includes three widely discussed papers on the phenomenon of self-knowledge and its compatibility with externalist conceptions of mental content. Part three concerns the classical but ill-understood phenomenon of knowledge that is based upon knowledge of meaning or conceptual competence. Finally, part four turns its attention from general issues about mental content to an account of a specific class of mental contents. It contains two widely discussed papers on the nature of colour concepts, and colour properties.

This volume presents a series of influential essays by Paul Boghossian on the theory of content and on its relation to the phenomenon of a priori knowledge. The essays are organised under four headings: the nature of content; content and self-knowledge; knowledge, content, and the a priori ; and colour concepts.

Presents and defends a bold new approach to the ethics of belief and to resolving the internalism-externalism debate in epistemology.

Michael Bergmann provides a decisive refutation of internalism and a sustained defense of externalism, developing his theory of justification by imposing both a proper function and a no-defeater requirement.

With one exception, all of the papers in this volume were originally presented at a conference held in April, 1978, at The Ohio State University. The excep tion is the paper by Wilfrid Sellars, which is a revised version of a paper he originally published in the Journal of Philosophy, 1973. However, the present version of Sellars' paper is so thoroughly changed from its original, that it is now virtually a new paper. None of the other nine papers has been published previously. The bibliography, prepared by Nancy Kelsik, is very extensive and it is tempting to think that it is complete. But I believe that virtual com pleteness is more likely to prove correct. The conference was made possible by grants from the College of Human ities and the Graduate School, Ohio State University, as well as by a grant from the Philosophy Department. On behalf of the contributors, I want to thank these institutions for their support. I also want to thank Marshall Swain and Robert Turnbu~l for early help and encouragement; Bette Hellinger for assistance in setting up the confer ence; and Mary Raines and Virginia Foster for considerable aid in the pre paration of papers and many other conference matters. The friendly advice of the late James Cornman was also importantly helpful. April,1979 GEORGE S. PAPPAS ix INTRODUCTION The papers in this volume deal in different ways with the related issues of epistemic justification or warrant, and the analysis of factual knowledge.

Richard Swinburne offers an original treatment of a question at the heart of epistemology: what makes a belief a rational one, or one which the believer is justified in holding? He maps the various totally different and purportedly rival accounts that philosophers give of epistemic justification ('internalist' and 'externalist'), and argues that they are really accounts of different concepts. He distinguishes (as most epistemologists do not) between synchronic justification (justification at a time) and diachronic justification (synchronic justification resulting from adequate investigation) — both internalist and externalist. He argus that most kinds of justification are worth having because (for different reasons) indicative of truth. However, it is only justification of intermalist kinds that can guide a believer's actions. Swinburne goes on to show the usefulness of the probability calculus in elucidating how empirical evidence makes beliefs probably true: every proposition has an intrinsic probability (an a priori probability independent of empirical evidence) which may be increased or decreased by empirical evidence. This innovative and challenging book will refresh epistemology and rewrite its agenda.