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Unity, Truth and the Liar

The Modern Relevance of Medieval Solutions to the Liar Paradox

  • Book
  • © 2008

Overview

  • Provides a formal reconstruction of several medieval theories of truth, demonstrating their relevance to modern research
  • Approaches the discussion about truth theory and paradoxes from a semantical, logical and a historical perspective
  • Contains critical editions of the medieval sources of the insolubilia, such as Heytesbury’s treatise on Insolubles (14th century), with introduction and notes
  • Revives the debate on the Liar Paradox
  • Entirely written in dispute style

Part of the book series: Logic, Epistemology, and the Unity of Science (LEUS, volume 8)

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Table of contents (15 chapters)

  1. Disputatio

Keywords

About this book

Andinmy haste, I said: “Allmenare Liars” 1 —Psalms 116:11 The Original Lie Philosophical analysis often reveals and seldom solves paradoxes. To quote Stephen Read: A paradox arises when an unacceptable conclusion is supported by a plausible argument from apparently acceptable premises. [...] So three di?erent reactions to the paradoxes are possible: to show that the r- soning is fallacious; or that the premises are not true after all; or that 2 the conclusion can in fact be accepted. There are sometimes elaborate ways to endorse a paradoxical conc- sion. One might be prepared to concede that indeed there are a number of grains that make a heap, but no possibility to know this number. However, some paradoxes are more threatening than others; showing the conclusiontobeacceptableisnotaseriousoption,iftheacceptanceleads to triviality. Among semantic paradoxes, the Liar (in any of its versions) 3 o?ers as its conclusion a bullet no one would be willing to bite. One of the most famous versions of the Liar Paradox was proposed by Epimenides, though its attribution to the Cretan poet and philosopher has only a relatively recent history. It seems indeed that Epimenides was mentioned neither in ancient nor in medieval treatments of the Liar 1 Jewish Publication Society translation. 2 Read [1].

Editors and Affiliations

  • Department of Philosophy, University of Helsinki, Helsinki, Finland

    Tero Tulenheimo

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