Footnotes to Plato from the foothills of the Superstition Mountains

Category: Ontological Arguments

  • God: Necessary or Noncontingent?

    Many theists in the tradition of Anselm and Aquinas define God as a necessary being.  But if God is a necessary being, then he cannot not exist: he exists in all broadly-logically possible worlds.  The actual world is of course one of these worlds.  So it would seem to follow from the very definition of…

  • Pavel Tichý on Descartes’ Meditation Five Ontological Argument

    This post is the fourth in a series on Pavel Tichý's "Existence and God" (J. Phil., August 1979, 403-420). In section II we find a critique of Descartes' Meditation Five ontological argument. Tichý claims to spot two fallacies in the argument. I will argue that only one of them is a genuine fallacy. One could…

  • Four Kinds of Ontological Argument

    The essence of ontological argumentation is the inferential move from the concept/essence of F to the existence/nonexistence of F. We are all familiar with ontological arguments for the existence of God. They have been a staple of philosophy of religion discussions from Anselm to Plantinga. But there is nothing in the nature of ontological argumentation…