more on this theme | more from this thinker | more from this text
Full Idea
My own suspicion about the Ontological Argument is that the fault lies in taking notions like 'the most perfect, impressive and powerful being conceivable' to be well-defined.
Gist of Idea
I think the fault of the Ontological Argument is taking the original idea to be well-defined
Source
Colin McGinn (Logical Properties [2000], Ch.2)
Book Ref
McGinn,Colin: 'Logical Properties' [OUP 2003], p.50
A Reaction
I'm tempted to put it more strongly: the single greatest challenge for the theist with intellectual integrity is to give a clear and coherent definition of God. There must be no internal contradictions, and it must be within the bounds of possibility.