[[Image:Anselm.jpg|thumbnail|right|175px|[[Anselm of Canterbury]] was the originator of the ontological argument]]
The [[ontological argument]] attempts to prove God's existence through abstract reasoning alone. The argument is entirely ''[[a priori]],'' i.e. it involves no empirical evidence at all. Rather, the argument begins with an explication of the concept of God, and seeks to demonstrate that God exists on the basis of that concept alone.
The [[ontological argument]] attempts to prove God's existence through abstract reasoning alone. The argument is entirely ''[[a priori]],'' i.e. it involves no empirical evidence at all. Rather, the argument begins with an explication of the concept of God, and seeks to demonstrate that God exists on the basis of that concept alone.
{{cquote|"The argument is ingenious. It has the appearance of a linguistic trick, but it is a difficult task to say precisely what, if anything, is wrong with it. All forms of the argument make some association between three concepts: the concepts of God, of perfection, and of existence. Very roughly, they state that perfection is a part of the concept of God, and that perfection entails existence, and so that the concept of God entails God's existence." <ref>http://www.philosophyofreligion.info/ontological.html</ref>}}
{{cquote|"The argument is ingenious. It has the appearance of a linguistic trick, but it is a difficult task to say precisely what, if anything, is wrong with it. All forms of the argument make some association between three concepts: the concepts of God, of perfection, and of existence. Very roughly, they state that perfection is a part of the concept of God, and that perfection entails existence, and so that the concept of God entails God's existence." <ref>http://www.philosophyofreligion.info/ontological.html</ref>}}