Arguments for and against the existence of God have been proposed by philosophers, theologians, scientists, and others for thousands of years. In philosophical terms, such arguments involve primarily the disciplines of epistemology (the nature and scope of knowledge) and ontology (study of the nature of being, existence, or reality) and also the theory of value, since concepts of perfection are connected to notions of God. A wide variety of arguments exist which can be categorized as metaphysical, logical, empirical, or subjective. The existence of God is subject to lively debate in the philosophy of religion, popular culture, and philosophy.
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 Aquinas, who presented their own versions of the cosmological argument (the kalam argument and the first way, respectively); Descartes, who said that the existence of a benevolent God was 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. Thinkers who have provided arguments against the existence of God include David Hume, Kant, Nietzsche, and Bertrand Russell. In modern culture, the question of God’s existence has been discussed by scientists such as Stephen Hawking, Francis Collins, Lawrence M. Krauss, Richard Dawkins, and John Lennox, as well as philosophers including Richard Swinburne, Alvin Plantinga, William Lane Craig, Rebecca Goldstein, A. C. Grayling, Daniel Dennett, Edward Feser, David Bentley Hart and Sam Harris.
Atheism views arguments for the existence of God as insufficient, mistaken or weighing less in comparison to arguments against. Fideists acknowledge that belief in the existence of God may not be amenable to demonstration or refutation, but rests on faith alone. The Catholic Church maintains that knowledge of the existence of God is the “natural light of human reason”. Other religions, such as Buddhism do not concern themselves with the existence of gods at all, while religions such as Jainism reject the possibility of a creator deity.