Who was Warnie?
I hate to sound immature or what not, but something sort of bothered me the whole movie... was Warnie _really_ his brother? It's well known that in those days, "brothers" who lived together were actually couples and just said they were brothers as cover. Not that I have a problem with that, I'm just asking. I find it odd that both of these brothers would have the same penchant for celibacy and pure academia.
I have read Lewis' "Mere Christianity" as well as "The Screwtape Letters". The former is the most convincing argument in favor Christianity I have ever read or heard. Very intelligent man.