Arthur Schopenhauer on Naturalness in Logic

In Language, Logic, and Mathematics in Schopenhauer. Basel, Schweiz: Birkhäuser. pp. 145-165 (2020)
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The question of naturalness in logic is widely discussed in today’s research literature. On the one hand, naturalness in the systems of natural deduction is intensively discussed on the basis of Aristotelian syllogistics. On the other hand, research on “natural logic” is concerned with the implicitly existing logical laws of natural language, and is therefore also interested in the naturalness of syllogistics. In both research areas, the question arises what naturalness exactly means, in logic as well as in language. We show, however, that this question is not entirely new: In his Berlin Lectures of the 1820s, Arthur Schopenhauer already discussed in depths what is natural and unnatural in logic. In particular, he anticipates two criteria for the naturalness of deduction that meet current trends in research: (1) Naturalness is what corresponds to the actual practice of argumentation in everyday language or scientific proof; (2) Naturalness of deduction is particularly evident in the form of Euler-type diagrams.



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Jens Lemanski
University of Münster

Citations of this work

World and Logic.Jens Lemanski - 2021 - London, Vereinigtes Königreich: College Publications.
Arthur Schopenhauer: Logic and Dialectic.Jens Lemanski - 2023 - Internet Encyclopedia of Philosophy.

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