Abstract

In spite of its title, this volume sheds no new light on the debated problem of whether Peirce's ideas form, or can be reconstructed to form, an integrated and internally consistent system. The book, instead, avoids the problem entirely, the pith of its thesis about the unity of Peirce's philosophy being that, in various guises, the notion of Thirdness permeates his thought. Apparently, Haas thinks it evident that to point up the central role of this notion in each of Peirce's subdivisions of philosophy—Phenomenology, Logic, and Metaphysics—is to show the unity of the philosophy as a whole. But he does not counter any specific charges brought against this claim of unity—though he mentions some of them—or even outline how the conception of law is to vindicate this claim. What he does do, following Peirce's three-fold division of philosophy, is to conduct a survey built around the Firstness-Secondness-Thirdness theme; and this exposition, though uncritical, is not lacking in care and subtlety, so that those looking for an overview of Peirce's thought can profit from the book.—C. T. W.