The Existence of God has been debated through an ontological argument.
Existence of God . In philosophical terms , the question of the existence of God involves the disciplines of epistemology ( the nature and scope of knowledge ) and ontology ( study of the nature of being , existence , or reality ) and the theory of value ( since some definitions of God include `` perfection '' ) . The Western tradition of philosophical discussion of the existence of God began with Plato and Aristotle , who made arguments that would now be categorized as cosmological . Other arguments for the existence of God have been proposed by St. Anselm , who formulated the first ontological argument ; Ibn Rushd ( Averroes ) and Thomas Aquinas , who presented their own versions of the cosmological argument ( the kalam argument and the first way , respectively ) ; René Descartes , who said that the existence of a benevolent God is logically necessary for the evidence of the senses to be meaningful ; and Immanuel Kant , who argued that the existence of God can be deduced from the existence of good .