“There is no neutral ground in the universe. Every square inch, every split second is claimed by God, and counterclaimed by Satan.”

“The Holiness of God is something more and other than moral perfection: His claim upon us is something more and other than the claim of moral duty.”

“Do not be deceived, Wormwood. Our cause is never more in danger than when a human, no longer desiring, but still intending, to do our Enemy's will, looks round upon a universe from which every trace of Him seems to have vanished, and asks why he has been forsaken, and still obeys.”

“I could never have gone far in any science because on the path of every science the lion Mathematics lies in wait for you.”

“Satan always sends error into the world in pairs that are opposites. His great hope is that you will get so upset about one of his errors, that you'll react into the opposite one, and he's got you.”

“The Son of God became a man to enable men to become sons of God.”

“Supposing there was no intelligence behind the universe, no creative mind. In that case, nobody designed my brain for the purpose of thinking. It is merely that when the atoms inside my skull happen, for physical or chemical reasons, to arrange themselves in a certain way, this gives me, as a by-product, the sensation I call thought. But, if so, how can I trust my own thinking to be true? It's like upsetting a milk jug and hoping that the way it splashes itself will give you a map of London. But if I can't trust my own thinking, of course I can't trust the arguments leading to Atheism, and therefore have no reason to be an Atheist, or anything else. Unless I believe in God, I cannot believe in thought: so I can never use thought to disbelieve in God.”