Rather embarrassing request. Maybe 7 years ago, I came across an interesting essay on "the existence of God or the Devil." DISCLAIMER: NO IT WAS NOT C.S. LEWIS OR CHESTERTON OR WILLIAM LANE CRAIG. THANK YOU! It was maybe 6 or 8 pages long, and was fairly learned and erudite, but written in a Screwtape-style fashion ; it was a way of "backing up into" the existence of God, starting with the existence of Evil ; and from there, not arguing against God, but FOR the existence of the Devil (from thence, of course, God Follows, since the Devil rebelled...