School of Historical and Philosophical Studies - Research Publications
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ItemDoubt Truth to be a Liar(Oxford University PressOxford, 2006-05-01)Abstract The Law of Non-Contradiction has been high orthodoxy in Western philosophy since Aristotle. The so-called Law has been the subject of radical challenge in recent years by dialetheism, the view that some contradictions are indeed true. Many philosophers have taken the Law to be central to many of our most important philosophical concepts. This book mounts the case against this view. Starting with an analysis of Aristotle on the Law, it discusses the nature of truth, rationality, negation, and logic itself, and argues that the Law is inessential to all of these things. The book develops Priest’s earlier ideas in In Contradiction.
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ItemTowards non-being: The Logic and Metaphysics of Intentionality(Oxford University Press, 2005)Towards Non-Being presents an account of the semantics of intentional verbs such as 'believes', 'fears', 'seeks', and 'imagines'. It tackles problems concerning intentional states which are often brushed under the carpet, such as their failure to be closed under deducibility. Drawing on the noneist work of the late Richard Routley (Sylvan), the book proceeds in terms of objects that may be existent or non-existent, at worlds that may either be possible or impossible. Since Russell, non-existent objects have had a bad press in Western philosophy. The book mounts a full-scale defence, and in the process, offers an account of both fictional and mathematical objects as non-existent.