This work is an introduction on Polo's criticism of Saint Anselm's argument, showing that this argument is inefficient with respect to Polo's comprehesion of the intellect and Polo's study of the existence.

The objective of this article is to analyze the consequences that affect the First Metaphysical Principles when the Ontological Argument is established. Saint Anselm and Descartes do not share the same consideration about the first principles. My intention is to show the differences between their points of view and at the same time contrast these ideas with Polo's theory.