The Law of Non-Contradiction holds that both sides of a contradiction cannot be true. Dialetheism is the view that there are contradictions both sides of which are true. Crucial to the dispute, then, is the central notion of contradiction. My first step here is to work toward clarification of that simple and central notion: Just what is a contradiction?

At the end of the opening chapter of his Second Treatise of Government , Locke describes political power in the following terms: ‘Political Power then I take to be a Right of making Laws with Penalties of Death, and consequently all less Penalties, for the Regulating and Preserving of Property, and of employing the force of the Community, in the Execution of such Laws, and in the defence of the Common-wealth from Foreign Injury, and all this only for the Publick (...) Good.’. (shrink)

"This rich compendium on the lives and doctrines of philosophers ranges over three centuries, from Thales to Epicurus (to whom the whole tenth book is devoted); 45 important figures are portrayed. Diogenes Laertius carefully compiled his information from hundreds of sources and enriches his accounts with numerous quotations. Diogenes Laertius lived probably in the earlier half of the 3rd century CE, his ancestry and birthplace being unknown. His history, in ten books, is divided unscientifically into two 'Successions' or sections: 'Ionian' (...) from Anaximander to Theophrastus and Chrysippus, including the Socratic schools; 'Italian' from Pythagoras to Epicurus, including the Eleatics and sceptics. It is a very valuable collection of quotations and facts." -- Publisher description. (shrink)

Thirty years after Lewis's paper, this book brings together some of the most important recent work connecting—or, in some cases, disputing the connection ...

First published in 1903, this volume revolutionized philosophy and forever altered the direction of ethical studies. A philosopher’s philosopher, G. E. Moore was the idol of the Bloomsbury group, and Lytton Strachey declared that Principia Ethica marked the rebirth of the Age of Reason. This work clarifies some of moral philosophy’s most common confusions and redefines the science’s terminology. Six chapters explore: the subject matter of ethics, naturalistic ethics, hedonism, metaphysical ethics, ethics in relation to conduct, and the ideal. Moore's (...) simplicity of style and precise use of everyday language exercised an enormous influence on the development of analytic philosophy, and they contribute to the continuing resonance of his compelling arguments. (shrink)

Scientific reasoning is—and ought to be—conducted in accordance with the axioms of probability. This Bayesian view—so called because of the central role it accords to a theorem first proved by Thomas Bayes in the late eighteenth ...

In his new foreword to this edition, Hilary Putnam forcefully rejects these nativist claims.

This is a new revised version of Dr. Laslett's standard edition of Two Treatises. First published in 1960, and based on an analysis of the whole body of Locke's publications, writings, and papers. The Introduction and text have been revised to incorporate references to recent scholarship since the second edition and the bibliography has been updated.

The void is deadly. If you were cast into a void, it would cause you to die in just a few minutes. It would suck the air from your lungs. It would boil your blood. It would drain the warmth from your body. And it would inflate enclosures in your body until they burst}.

In this book Saul Kripke brings his powerful philosophical intelligence to bear on Wittgenstein's analysis of the notion of following a rule.

One of Hume's most well-known works and a masterpiece of philosophy, A Treatise of Human Nature is indubitably worth taking the time to read.

One of Hume's most well-known works and a masterpiece of philosophy, A Treatise of Human Nature is indubitably worth taking the time to read.

The Concept of Law is one of the most influential texts in English-language jurisprudence. 50 years after its first publication its relevance has not diminished and in this third edition, Leslie Green adds an introduction that places the book in a contemporary context, highlighting key questions about Hart's arguments and outlining the main debates it has prompted in the field. The complete text of the second edition is replicated here, including Hart's Postscript, with fully updated notes to include modern references (...) and further reading. (shrink)

Written in an outstandingly clear and lively style, this 1969 book provokes its readers to rethink issues they may have regarded as long since settled.

Applied Ethics focuses the central concepts of traditional morality from the companion book Moral Theory - rights, justice, the good, virtue, and the fundamental value of human life - on a number of pressing contemporary problems, including abortion, euthanasia, animals, capital punishment, and war.

Introduction to one of the most important, controversial, and suggestive works of moral philosophy ever written.

John Searle's Speech Acts made a highly original contribution to work in the philosophy of language. Expression and Meaning is a direct successor, concerned to develop and refine the account presented in Searle's earlier work, and to extend its application to other modes of discourse such as metaphor, fiction, reference, and indirect speech arts. Searle also presents a rational taxonomy of types of speech acts and explores the relation between the meanings of sentences and the contexts of their utterance. The (...) book points forward to a larger theme implicit in these problems - the basis certain features of speech have in the intentionality of mind, and even more generally, the relation of the philosophy of language to the philosophy of mind. (shrink)

A Treatise of Human Nature, David Hume's comprehensive attempt to base philosophy on a new, observationally grounded study of human nature, is one of the most important texts in Western philosophy. It is also the focal point of current attempts to understand 18th-century western philosophy. The Treatise addresses many of the most fundamental philosophical issues: causation, existence, freedom and necessity, and morality. The volume also includes Humes own abstract of the Treatise, a substantial introduction, extensive annotations, a glossary, a comprehensive (...) index, and suggestions for further reading. (shrink)

In his introduction to these closely linked essays Professor Hart offers both an exposition and a critical assessment of some central issues in jurisprudence and political theory. Some of the essays touch on themes to which little attention has been paid, such as Bentham's identification of the forms of mysitification protecting the law from criticism; his relation to Beccaria; and his conversion to democratic radicalism and a passionate admiration for the United States.

Brian Calvert has offered us a clear and careful analysis of Locke's views on punishment and capital punishment. The primary goal of his paper - that of correcting the misperception of Locke as a wholehearted proponent of capital punishment for a wide range of offenses - must be allowed to be both laudable and largely achieved in his discussion. But Calvert's analysis also encourages, I think, a number of serious misunderstandings of Locke's true position.

A selective background -- Broadly classical approaches -- Paracompleteness -- More on paracomplete solutions -- Paraconsistent dialetheism.

Introduction : death, metaphysics, and morality / John Martin Fischer Death knocks / Woody Allen Rationality and the fear of death / Jeffrie G. Murphy Death / Thomas Nagel The Makropulos case : reflections on the tedium of immortality / Bernard Williams The evil of death / Harry S. Silverstein How to be dead and not care : a defense of Epicurus / Stephen E. Rosenbaum The dead / Palle Yourgrau The misfortunes of the dead / George Pitcher Harm to (...) others / Joel Feinberg Reasons and persons / Derek Parfit Why is death bad? / Anthony L. Brueckner and John Martin Fischer Death and the value of life / Jeff McMahan Annihilation / Steven Luper-Foy Epicurus and annihilation / Stephen E. Rosenbaum Some puzzles about the evil of death / Fred Feldman Well-being and time / J. David Velleman. (shrink)

One of the few points of agreement to be found in mainstream responses to the logical and semantic problems generated by vagueness is the view that if any modification of classical logic and semantics is required at all then it will only be such as to admit underdetermined reference and truth-value gaps. Logics of vagueness including many valued logics, fuzzy logics, and supervaluation logics all provide responses in accord with this view. The thought that an adequate response might require the (...) recognition of cases of overdetermination and truth value gluts has few supporters. This imbalance lacks justification. As it happens, Jaskowski's paraconsistent discussive logic-a logic which admits truth value gluts-can be defended by reflecting on similarities between it and the popular supervaluationist analysis of vagueness already in the philosophical literature. A simple dualisation of supervaluation semantics results in a paraconsistent logic of vagueness based on what has been termed subvaluational semantics. (shrink)

Kripke's lectures, published as Wittgenstein on Rules and Private Language , posed a sceptical problem about following a rule, which he cautiously attributed to Wittgenstein. He briefly noticed an analogy between his new kind of scepticism and Goodman's riddle of induction. ‘Grue’, he said, could be used to formulate a question not about induction but about meaning: the problem would not be Goodman's about induction—‘Why not predict that grass, which has been grue in the past, will be grue in the (...) future?’—but Wittgenstein's about meaning: ‘Who is to say that in the past I did not mean grue by “green”, so that now I should call the sky, not the grass, “green”?’. (shrink)

In this book, one of the world's preeminent philosophers takes issue with an idea that has found an all-too-prominent place in popular culture and philosophical ...

Aspects of the world are normative in as much as they or their existence constitute reasons for persons, i.e. grounds which make certain beliefs, moods, emotions, intentions or actions appropriate or inappropriate. Our capacities to perceive and understand how things are, and what response is appropriate to them, and our ability to respond appropriately, make us into persons, i.e. creatures with the ability to direct their own life in accordance with their appreciation of themselves and their environment, and of the (...) reasons with which, given how they are, the world presents them. An explanation of normativity would explain the various puzzling aspects of this complex phenomenon. In particular it would explain how it is that aspects of the world can constitute reasons for cognitive, emotive, and volitional responses; how it is that we can come to realise that certain cognitive, emotional or volitional responses are appropriate in various circumstances, and inappropriate in others; and how it is that we can respond appropriately. This paper explores an aspect of the last of these questions. (shrink)

The argument proceeds by exploiting the gradually decreasing vagueness of a certain sequence of predicates. the vagueness of 'vague' is then used to show that the thesis that all vague predicates are incoherent is self-defeating. a second casualty is the view that the probems of vagueness can be avoided by restricting the scope of logic to nonvague predicates.

This volume is built on the papers given at the 1998" Ratio" conference on normativity.

Some fundamental epistemic norms govern the conduct of the activity of inquiry and the progress of theoretical deliberation. We monitor our deliberations by raising questions about how they should be conducted and about how effectively they have been carried out. Such questions ‘occur’ to us: we are often passive recipients of them. The paper discusses what determines when questions should occur to us and it investigates how far these observations can be seen as threatening our freedom of mind. These phenomena (...) help us to see the role of states such as virtues in epistemic evaluation. (shrink)

Several different approaches to the conceptual analysis of causation are guided by the idea that a cause is something that makes a difference to its effects. These approaches seek to elucidate the concept of causation by explicating the concept of a difference-maker in terms of better-understood concepts. There is no better example of such an approach than David Lewis’ analysis of causation, in which he seeks to explain the concept of a difference-maker in counterfactual terms. Lewis introduced his counterfactual theory (...) of causation with these words: 'We think of a cause as something that makes a difference, and the difference it makes must be a difference from what would have happened without it. Had it been absent, its effects—some of them, at least, and usually all—would have been absent as well.' (Lewis 1973b: pp. 160-1) According to Lewis, a cause c makes a difference to an effect e in the sense that if the cause c had not occurred, the effect e would not have occurred either. All we shall see in section 2, Lewis’ theory says there is more to the concept of causation than this counterfactual condition. Lewis is on the right track, I think, in saying that we think of a cause as something that makes a difference and that this thought is best explicated in terms of counterfactual concepts. However, I shall argue that the particular way in which Lewis spells out the concept of a cause as difference-maker is unsatisfactory. For Lewis’ articulation of this concept is distorted by a specific metaphysical assumption: specifically, that causation is an absolute relation, specifiable independently of any contextual factors. The distortion induced by this assumption is reflected in the undiscriminating manner in which his theory generates countless causes for any given effect. However, commonsense judgement is much more discriminating about causes than Lewis’ theory. Accordingly, I claim that Lewis' analysis faces the problem of profligate causes and I outline some specific problem cases in section 3.. (shrink)