i) Examine the ontological argument as an a priori proof for the existence of God. (18)

Ontology is the branch of philosophy that explores the whole concept of existence. Sometimes scientist have to assume that something exists in reality in the physical world even if they have never come across an example of it, because a combination of factors indicate that there must be X, even if we have not found it yet, in order to explain other things. The ontological argument for the existence of God is an a priori argument, working from first principles and a definition in an attempt to demonstrate the existence of God. It is also a deductive argument, using logic rather than depending on the evidence of sense experience. In this way, then the ontological argument is different from other attempts to argue for the existence of God.

The ontological argument argues that almost everything, which exists, does so in a contingent way; it depends upon other factors. We as individuals are contingent beings; everything else apart from God exists contingently. God, however, it is argued by religious believers, is necessary rather than contingent, there was no time when God didn’t exist. There is nothing that could happen which would cause God to cease to exist. The ontological argument begins with assumptions about God, without any empirical evidence such as the characteristics of God: Omnipotent, omniscient and omnipotent. This is what makes the argument an a priori argument, as most of the evidence used are based on assumptions of what God is like.

St Anselm was an Archbishop of Canterbury; he produced the ontological argument from the perspective of ‘faith seeking understanding’ rather than in an attempt to convert non-believers. Anselm produced his argument in two different forms, Anselm starts by defining God as ‘that than which nothing greater can be thought.’ He argued that