The great current revival of pragmatism is beginning to bear new fruit. Rescher's thoughtful development of a sweeping and sophisticated new metaphysics offers promise of integrating science with values. A wonderfully perceptive and articulate book.

John Lachs, Vanderbilt University

In this important new study, Nicholas Rescher adds another chapter to his longterm project of integrating metaphysical realism and epistemic idealism in a neo-Peircean pragmatic framework. Exemplary for its clarity, comprehensiveness, and meticulous exposition, Rescher's inquiry into fundamental problems of ontology is sure to be widely discussed for its invaluable insights on the nature of reality and its methodological lessons about the scope and limits of scientific philosophy.

Dale Jacquette, Editor, American Philosophical Quarterly