Graham Priest (born 1948) is a philosopher and logician who is distinguished professor of philosophy at the CUNYGraduate Center, as well as a regular visitor at the University of Melbourne, where he was Boyce Gibson Professor of Philosophy and also at the University of St Andrews.
He is known for his defence of dialetheism, his in-depth analyses of the logical paradoxes (holding the thesis that there is a uniform treatment for many well-known paradoxes, such as the semantic, set-theoretic and liar paradoxes), and his many writings related to paraconsistent and other non-classical logics. In these he draws on the history of philosophy, including Asian philosophy.
Priest, a long-time resident of Australia, now residing in New York City, is the author of numerous books, and has published articles in nearly every major philosophical and logical journal. He was a frequent collaborator with the late Richard Sylvan, a fellow proponent of dialetheism and paraconsistent logic.
Priest has also published on metaphilosophy (Beyond the Limits of Thought, 1995/2002).
In addition to his work in philosophy and logic, Priest practised karate-do. He is 3rd dan, International Karate-do Shobukai; 4th dan, shitō-ryū, and an Australian National kumite referee and kata judge. Presently, he practices tai chi.
Priest, Graham; Routley, R. On Paraconsistency Research Report #13, Research School of Social Sciences, Australian National University 1983. Reprinted as the introductory chapters of Paraconsistent Logic, G.Priest, R. Routley and J. Norman (eds.), Philosophia Verlag, 1989. Translated into Romanian as chapters in I. Lucica (ed.), Ex Falso Quodlibet: studii de logica paraconsistenta (in Romanian), Editura Technica, 2004.
Priest, Graham. Logic: A Very Short Introduction, Oxford University Press, 2000. ISBN0-19-289320-3 Translated into Portuguese as Lógica para Começar, Temas & Debates, 2002. Translated into Spanish as Una Brevísima Introducción a la Lógica, Oceano, 2006. Translated into Czech, as Logika – průvodce pro každého, Dokořán, 2007. Translated into Persian by Bahram Asadian, 2007. Translated into Japanese, Iwanami Shoten, 2008.
Priest, Graham; van Bendegem, Jean Paul; Batens, Diderik; Mortensen, Chris (2000). Frontiers of paraconsistent logic. Baldock, Hertfordshire, England Philadelphia, Pennsylvania: Research Studies Press. ISBN9780863802539.
Priest, Graham. Introduction to Non-Classical Logic, Cambridge University Press, 2001. 2nd edition: Introduction to Non-Classical Logic: From If to Is, Cambridge University Press, 2008. ISBN978-0-521-67026-5 German translation of Part 1 of Introduction to Non-Classical Logic: From If to Is: Einführung in die nicht-klassische Logik, Mentis 2008.
Priest, Graham. Doubt Truth to be a Liar, Oxford University Press, 2006. ISBN0-19-926328-0
Priest, Graham. Logic: A Brief Insight, Sterling 2010. ISBN1-4027-6896-6
Priest, Graham. One: Being an Investigation into the Unity of Reality and of its Parts, including the Singular Object which is Nothingness, Oxford University Press, 2014. ISBN978-0-19-968825-8
Priest, Graham. 2018. The Fifth Corner of Four: An Essay on Buddhist Metaphysics and the Catuṣkoṭi. Oxford: Oxford University Press. ISBN978-0-19-875871-6
Deguchi, Yasuo, Jay L. Garfield, Graham Priest, and Robert H. Sharf. 2021. What Can't Be Said: Paradox and Contradiction in East Asian Thought. New York: Oxford University Press. ISBN978-0-19-752618-7
Priest, Graham. 2021. Capitalism: Its Nature and Its Replacement: Buddhist and Marxist Insights. Routledge. ISBN9781032049106