<UL TYPE=SQUARE>
<LI>God is the entity than which no greater entity can be conceived.
<LI> The concept of God exists in human understanding.
<LI> God does not exist in reality (assumed in order to refute).
<LI> The concept of God existing in reality exists in human understanding.
<LI> If an entity exists in reality and in human understanding, this entity is greater than it would have been if it existed only in human understanding (a statement of existence as a perfection).
<LI>From 1, 2, 3, 4, and 5 an entity can be conceived which is greater than God, the entity than which no greater entity can be conceived (logical self-contradiction).
<LI>Assumption 3 is wrong, therefore God exists in reality (assuming 1, 2, 4, and 5 are accepted as true).
</UL>
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