The Law of Non-Contradiction as a Metaphysical Principle

  • Tuomas E. Tahko Durham University

Abstract

The goals of this paper are two-fold: I wish to clarify the Aristotelian conception of the law of non-contradiction as a metaphysical rather than a semantic or logical principle, and to defend the truth of the principle in this sense. First I will explain what it in fact means that the law of non-contradiction is a metaphysical principle. The core idea is that the law of non-contradiction is a general principle derived from how things are in the world. For example, there are certain constraints as to what kind of properties an object can have, and especially: some of these properties are mutually exclusive. Given this characterisation, I will advance to examine what kind of challenges the law of non-contradiction faces—the main opponent here is Graham Priest. I will consider these challenges and conclude that they do not threaten the truth of the law of non-contradiction understood as a metaphysical principle.

Author Biography

Tuomas E. Tahko, Durham University
Published
2009-06-11
How to Cite
TAHKO, Tuomas E.. The Law of Non-Contradiction as a Metaphysical Principle. The Australasian Journal of Logic, [S.l.], v. 7, june 2009. ISSN 1448-5052. Available at: <https://ojs.victoria.ac.nz/ajl/article/view/1806>. Date accessed: 23 may 2019. doi: https://doi.org/10.26686/ajl.v7i0.1806.