God, Modality and Essentialism. A Version of the Scotist Proof for God’s Existence

  • Marcin Tkaczyk John Paul II Catholic University of Lublin, Faculty of Philosophy
Keywords: Duns Scotus, proof for God’s existence, modal logic, essentialism

Abstract

A proof for God’s existence, inspired by Duns Scotus’s Tractatus de primo principio, is analyzed. The conclusion is based on three premises arranged in the matrix of a specific modal logic. The premises are: 1. it is possible for the world to be created by God; 2. if the world is created by God, then God exists; 3. if God exists, then God exists necessarily. In comparison to the original Scotus’s work the concept of essential order has been removed and replaced with a concept of creation. Modal expressions of the proof have been analyzed with an application of essentialism of Aristotle and Ibn Sina – the version of essentialism accepted by Scotus. Scotus’s underlying modal logic has been reconstructed and discussed in two versions: 1. as a modal logic with one pair of natural modalities; 2. as a multimodal logic with two pairs of modalities – natural and logical. The concept of natural modality is based on the essentialism discussed, the concept of logical modality is based on Scotus’s idea of non repugnantia terminorum.

Author Biography

Marcin Tkaczyk, John Paul II Catholic University of Lublin, Faculty of Philosophy

Rev. Marcin Tkaczyk, O.F.M. Conv., Ph.D. – Chair of Logic, Faculty of Philosophy, The John Paul II Catholic University of Lublin

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Published
2020-09-02
Section
Articles