<abstract xmlns="http://www.w3.org/1999/xhtml"><p>My aim in this paper is to critically assess Plantinga’s modal ontological argument for existence of God, such as it is presented in the book “The Nature of Necessity” (1974). Plantinga tries to show that this argument is (i) valid and (ii) it is rational to believe in his main premise, namely “there is a possible world in which maximal greatness is instantiated”. On the one hand, I want to show that this argument is logically valid in both systems B and S5 of modal logic. On the other hand, I think that this argument is not a good argument to show that God exists or that it is rational to believe in God.</p></abstract>

My aim in this paper is to critically assess Plantinga’s modal ontological argument for existence of God, such as it is presented in the book “The Nature of Necessity” (1974). Plantinga tries to show that this argument is (i) valid and (ii) it is rational to believe in his main premise, namely “there is a possible world in which maximal greatness is instantiated”. On the one hand, I want to show that this argument is logically valid in both systems B and S5 of modal logic. On the other hand, I think that this argument is not a good argument to show that God exists or that it is rational to believe in God.

<article-title xml:lang="pt">Uma avaliação do argumento ontológico modal de Plantinga

Kairos. Journal of Philosophy & Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Uma avaliação do argumento ontológico modal de Plantinga

My aim in this paper is to critically assess Plantinga’s modal ontological argument for existence of God, such as it is presented in the book “The Nature of...

Uma avaliação do argumento ontológico modal de Plantinga

Published Online: Apr 30, 2016

Page range: 71 - 84

DOI: https://doi.org/10.1515/kjps-2016-0004

Keywords
Modal Ontological Argument, Modal Logic, the Rationality of Theistic Belief, Alvin Plantinga

© 2016 Domingos Faria, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Uma avaliação do argumento ontológico modal de Plantinga

Published Online: Apr 30, 2016

Page range: 71 - 84

DOI: https://doi.org/10.1515/kjps-2016-0004

KeywordsModal Ontological Argument, Modal Logic, the Rationality of Theistic Belief, Alvin Plantinga

© 2016 Domingos Faria, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Modal Ontological Argument, Modal Logic, the Rationality of Theistic Belief, Alvin Plantinga