Abstract

This article shows that the modal ontological argument as proposed by Gottrieb Leibniz was very much anticipated in its logical articulation by John Duns Scotus in his work De Primo Principio. To this end, the author analyzes some of the various versions of the argument present in the philosophical thought of authors such as Scotus, Leibniz, Malcom and Plattinga, and demonstrates that those versions are based on the hidden premise of the possibility of the idea of God. In this respect, the Spanish philosopher Gustavo Bueno defends what he calls an “inverted ontological argument” which, if viable, would prove not so much the non-existence of God but that the idea of God does not exist itself.