A friend let me borrow a copy of a collection of C. S. Lewis books. Three of the four books in the collection I haven’t already read. Here is a quote I came across just now from The Business of Heaven that I really like.
There is no half-way house and there is no parallel in other religions. If you had gone to Buddha and asked him ‘are you the son of Brahma?’ he would have said ‘My, son, you are still in the vale of illusion.’ If you had gone to Socrates and asked, ‘Are you Zeus?’ he would have laughed at you. If you had gone to Mohammed and asked, ‘Are you Allah?’ he would have rent his clothes and then cut your head off. If you had asked Confucius, ‘Are you Heaven?’ I think he would probably have replied, ‘Remarks which are not in accordance with nature are in bad taste.’ The idea of a great moral teacher saying what Christ said is out of the question. In my opinion, the only person who can say that sort of thing is either God or a complete lunatic suffering from that form of delusion which undermines the whole mind of man. If you think you are a poached egg, when you are looking for a piece of toast to suit you, you may be sane, but if you think you are God, then there is no chance for you. We may note in passing that He was never regarded as a mere moral teacher. He did not produce that effect on any of the people who actually met Him. He produced mainly three effects–Hatred — Terror — Adoration. There was no trace of people expressing mild approval.
I actually read most of the quote a couple months ago in The Question of God by Dr. Armand M. Nicholi, Jr.