The Liar paradox raises foundational questions about logic, language, and truth (and semantic notions in general). A simple Liar sentence like 'This sentence is false' appears to be both true and false if it is either true or false. For if the sentence is true, then what it says is the case; but what it says is that it is false, hence it must be false. On the other hand, if the statement is false, then it is true, since it (...) says (only) that it is false. -/- How, then, should we classify Liar sentences? Are they true or false? A natural suggestion would be that Liars are neither true nor false; that is, they fall into a category beyond truth and falsity. This solution might resolve the initial problem, but it beckons the Liar's revenge. A sentence that says of itself only that it is false or beyond truth and falsity will, in effect, bring back the initial problem. The Liar's revenge is a witness to the hydra-like nature of Liars: in dealing with one Liar you often bring about another. -/- JC Beall presents fourteen new essays and an extensive introduction, which examine the nature of the Liar paradox and its resistance to any attempt to solve it. Written by some of the world's leading experts in the field, the papers in this volume will be an important resource for those working in truth studies, philosophical logic, and philosophy of language, as well as those with an interest in formal semantics and metaphysics. (shrink)

Semantic and soritical paradoxes challenge entrenched, fundamental principles about language - principles about truth, denotation, quantification, and, among others, 'tolerance'. Study of the paradoxes helps us determine which logical principles are correct. So it is that they serve not only as a topic of philosophical inquiry but also as a constraint on such inquiry: they often dictate the semantic and logical limits of discourse in general. Sixteen specially written essays by leading figures in the field offer new thoughts and arguments (...) about the paradoxes. (shrink)

The paper reviews a number of approaches for handling restricted quantification in relevant logic, and proposes a novel one. This proceeds by introducing a novel kind of enthymematic conditional.

Semantic and soritical paradoxes challenge entrenched, fundamental principles about language - principles about truth, denotation, quantification, and, among others, 'tolerance'. Study of the paradoxes helps us determine which logical principles are correct. So it is that they serve not only as a topic of philosophical inquiry but also as a constraint on such inquiry: they often dictate the semantic and logical limits of discourse in general. Sixteen specially written essays by leading figures in the field offer new thoughts and arguments (...) about the paradoxes. (shrink)

We are pluralists about logical consequence [1]. We hold that there is more than one sense in which arguments may be deductively valid, that these senses are equally good, and equally deserving of the name deductive validity. Our pluralism starts with our analysis of consequence. This analysis of consequence is not idiosyncratic. We agree with Richard Jeffrey, and with many other philosophers of logic about how logical consequence is to be defined. To quote Jeffrey.

The Liar paradox raises foundational questions about logic, language, and truth. A simple Liar sentence like 'This sentence is false' appears to be both true and false if it is either true or false. For if the sentence is true, then what it says is the case; but what it says is that it is false, hence it must be false. On the other hand, if the statement is false, then it is true, since it says that it is false.How, (...) then, should we classify Liar sentences? Are they true or false? A natural suggestion would be that Liars are neither true nor false; that is, they fall into a category beyond truth and falsity. This solution might resolve the initial problem, but it beckons the Liar's revenge. A sentence that says of itself only that it is false or beyond truth and falsity will, in effect, bring back the initial problem. The Liar's revenge is a witness to the hydra-like nature of Liars: in dealing with one Liar you often bring about another.JC Beall presents fourteen new essays and an extensive introduction, which examine the nature of the Liar paradox and its resistance to any attempt to solve it. Written by some of the world's leading experts in the field, the papers in this volume will be an important resource for those working in truth studies, philosophical logic, and philosophy of language, as well as those with an interest in formal semantics and metaphysics. (shrink)

The relation between categories and sentence frames as presented in ryle's "the concept of mind" is discussed. smart states, "it is important to note that the fact that two expressions 'a' and 'b' "will" go into the same blank in a sentence frame does "not" prove that they are of the same category." (staff).

This chapter contains sections titled: Notes.

In this volume of fourteen original essays, a distinguished team of contributors explore the extent to which, if at all, deflationism can accommodate paradox.

The paper begins by considering David Armstrong's beautiful paper 'The Headless Woman Illusion and the Defence of Materialism', which conjectures how we get the illusion that there are non-physical qualia. There are discussions of other metaphysical illusions, that there is a passage of time, that we have libertarian free will, and that consciousness is ineffable (which last also relates to Armstrong), and of their possible explanations. Moral: avoid appeal to so called intuition or phenomenology.

Semantic and soritical paradoxes challenge entrenched, fundamental principles about language - principles about truth, denotation, quantification, and, among others, 'tolerance'. Study of the paradoxes helps us determine which logical principles are correct. So it is that they serve not only as a topic of philosophical inquiry but also as a constraint on such inquiry: they often dictate the semantic and logical limits of discourse in general. Sixteen specially written essays by leading figures in the field offer new thoughts and arguments (...) about the paradoxes. (shrink)

Book Information Understanding Truth. By Soames Scott. Oxford University Press. New York. 1999. Pp. ix + 268. Cloth.

Frankfurt School critical theory has long opposed metaphysical philosophy because it ignores suffering and injustice. In the face of such criticism, proponents of metaphysics (for example Dieter Henrich) have accused critical theory of not fully investigating the questions is raises for itself, and falling into partial metaphysical positions, despite itself. If one focuses on Max Horkheimer's early essays, such an accusation seems quite fitting. There he vociferously attacks metaphysics, but he also develops a theory that pushes toward metaphysical questions. His (...) work can thus seem laden with unpacked metaphysical baggage, and fraught with contradiction. The aim of this paper is to show that Horkheimer's critique of metaphysics makes sense and is not contradicted by a surreptitious metaphysics. To show this, Horkheimer's views will be compared with Bas van Fraassen's in The Empirical Stance . Ultimately, the paper should show that Horkheimer's early philosophy can be reconstructed in such a way that it employs a 'materialist stance'. (shrink)

Max Horkheimer does not generally receive the scholarly attention given to other ‘Frankfurt School’ figures. This is in part because his early work seems contradictory, or unphilosophical. For example, Horkheimer seems, at various points (to use contemporary metaethical terms), like a constructivist, a moral realist, or a moral skeptic, and it is not clear how these views cohere. The goal of this article is to show that the contradictions regarding moral theory exist largely on the surface, and that one can (...) go below the surface to reconstruct a coherent position. Part I will examine Horkheimer’s skeptical critique of morality, and show that it leads to the realist position discussed in part II. Part III then shows that such realism can only be understood within a larger constructivist project, which elaborates on a minimal normativity present in human experience. This reconstruction should make sense of Horkheimer’s work, and show its contemporary relevance. (shrink)

(Revised 31-10-17) This is only one view on the topic; other views may be rather different. It starts at the more philosophical end and then becomes more empirical, and possibly easier to understand, as it proceeds.