Walter Burley on Negative Propositions, in: «Archives d'histoire doctrinale et littéraire du moyen âge» 88 (2021), pp. 41-63

Archives d'Histoire Doctrinale et Littéraire du Moyen Âge 88 (2021):41-63 (2021)
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Abstract

The basic principle of all realist theories of truth developed in the 13th and 14th centuries was that a proposition is true if and only if it tells us how things are in reality. Walter Burley (1275-1344) interpreted this principle in a more radical way than 13th-century realists did. Burley, in fact, proposed a strong correspondence theory, in which there is a strict biunique correspondence between linguistic and extra-linguistic elements. Now, if the principle of correspondence can be applied to Burley unconditionally to all affirmative statements (both for accidental and essential predications), it cannot be applied in the case of negative propositions, since in reality there can be no negative state of affairs. In order to solve this problem, Burley uses the strategy of introducing a complex mental object or objective entity as the significatum adequatum of negative sentences. It is an object which, although it exists only in the mind, is completely independent of our mental operations and which ultimately refers to the extra-mental world, composed exclusively of positive objects and states of affairs. In fact, the truth of a negative sentence does not depend on it corresponding to some negative fact, but rather on the opposite affirmative sentence failing to correspond to some positive extramental fact. Thus, extramental reality, which is only composed of positive objects, recovers its role as a yardstick for verifying the truth or falsity of all particular sentences, both affirmative and negative.

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Chiara Paladini
Università degli Studi dell'Aquila

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