Meditation V, Descartes proffers an ontological argument for God's existence.

In Meditation V, Descartes proffers an ontological argument for God's existence. Assess that argument and determine if you find it convincing. Then discuss if this argument is enough for him to claim in the last paragraph of Meditation VI, "For from the fact that God is not a deceiver it follows that in cases like these I am completely free from error." Also, discuss just what "cases" he means.