«'A clear, self-contained, unified introduction to a variety of extensions and alternatives to classical logic. Philosophically engaging and technically accomplished, it will serve as an excellent textbook for beginners as well as a valuable reference for advanced students and researchers.' Achille Varzi, Associate Professor of Philosophy, Columbia University»

«'An exciting new logic text that investigates non-classical propositional logics in an unusual way ... Propositional model, intuitionistic, multivalued, relevance and conditional logics are developed in detail. This book should be invaluable to any member of the profession interested in these topics at any level.' Edmund L. Gettier, Professor Emeritus, University of Massachusetts»

«'A well-organised introduction to the variety of logics extending or departing from classical propositional logic that have been of interest to logically-minded philosophers and philosophically-minded logicians ... This is an extremely useful book ... It is written in a concise yet highly accessible style, which provides a clear and well-motivated treatment of an impressively wide range of material.' Michael Glanzberg, Associate Professor of Philosophy, Massachusetts Institute of Technology»