Over at TWIM you'll find the theist's ultimate disputatious bunker, explicated in such pristine form that I just had to offer it here, as an example of what would probably make a pretty exciting amusement park ride: Escape From Reasonable Discourse! *please keep your arms, legs and minds INSIDE the vehicle* The article typifies, once again, the apologist's last gambit...it's all faith! God, Ghosts, or the existence of Pluto. Faith. Faith. Faith! Read it and weep.

I've touched on this subject from various angles-

here
here
here
here

and especially

here.

This is the final apologetical hidey-hole, folks, along with its corollary challenge "Prove the validity of logic using logic"! There's no win to be had here. At this point, the theist has closed his eyes, put his fingers in his ears, and is shouting "La la la la la! I can't hear you! I can't hear you!"

Walk away.