Every species is vague, every term goes cloudy at its edges, and so in my way of thinking, relentless logic is only another name for stupidity -for a sort of intellectual pigheadedness.H.G. Wells, First and Last Things (1908) In the philosophical debate on lying, there has generally been agreement that either the speaker believes that his statement is false, or he believes that his statement is true. This article challenges this assumption, and argues that lying is a scalar phenomenon that allows for a number of intermediate cases -the most obvious being cases of uncertainty. The first section shows that lying can involve beliefs about graded truth values (fuzzy lies) and graded beliefs (graded-belief lies).It puts forward a new definition to deal with these scalar parameters, that requires that the speaker asserts what he believes more likely to be false than true. The second section shows that statements are scalar in the same way beliefs are, and accounts for a further element of scalarity, illocutionary force.
The definition of lying and the insincerity conditionA number of philosophers have tried to define lying -i.e. to find the necessary and sufficient conditions for a statement to be a lie. According to the "classic" definition, first proposed in St.Augustine's De Mendacio (DM, 3.3) and later developed in several works (e.g. Mannison 1969: 132; Kupfer 1982: 134; Williams 2002: 96), "lying is to make a believed-false statement 1 to another * The author thanks Alberto Voltolini, Matteo Grasso, Carla Bazzanella, Jennifer Saul, Rosanna Keefe, Guido Bonino and Jörg Meibauer for their helpful comments, Igor Ž. Žagar for his support, Nina Black Simone for proofreading, and three anonymous reviewers.