“God created things which had free will. That means creatures which can go wrong or right. Some people think they can imagine a creature which was free but had no possibility of going wrong, but I can't. If a thing is free to be good it's also free to be bad. And free will is what has made evil possible. Why, then, did God give them free will? Because free will, though it makes evil possible, is also the only thing that makes possible any love or goodness or joy worth having. A world of automata -of creatures that worked like machines- would hardly be worth creating. The happiness which God designs for His higher creatures is the happiness of being freely, voluntarily united to Him and to each other in an ecstasy of love and delight compared with which the most rapturous love between a man and a woman on this earth is mere milk and water. And for that they've got to be free. Of course God knew what would happen if they used their freedom the wrong way: apparently, He thought it worth the risk. (...) If God thinks this state of war in the universe a price worth paying for free will -that is, for making a real world in which creatures can do real good or harm and something of real importance can happen, instead of a toy world which only moves when He pulls the strings- then we may take it it is worth paying.”

“Suppose one reads a story of filthy atrocities in the paper. Then suppose that something turns up suggesting that the story might not be quite true, or not quite so bad as it was made out. Is one's first feeling, 'Thank God, even they aren't quite so bad as that,' or is it a feeling of disappointment, and even a determination to cling to the first story for the sheer pleasure of thinking your enemies are as bad as possible? If it is the second then it is, I am afraid, the first step in a process which, if followed to the end, will make us into devils. You see, one is beginning to wish that black was a little blacker. If we give that wish its head, later on we shall wish to see grey as black, and then to see white itself as black. Finally we shall insist on seeing everything -- God and our friends and ourselves included -- as bad, and not be able to stop doing it: we shall be fixed for ever in a universe of pure hatred.”

“It is a serious thing to live in a society of possible gods and goddesses, to remember that the dullest most uninteresting person you can talk to may one day be a creature which,if you saw it now, you would be strongly tempted to worship, or else a horror and a corruption such as you now meet, if at all, only in a nightmare. All day long we are, in some degree helping each other to one or the other of these destinations. It is in the light of these overwhelming possibilities, it is with the awe and the circumspection proper to them, that we should conduct all of our dealings with one another, all friendships, all loves, all play, all politics. There are no ordinary people. You have never talked to a mere mortal. Nations, cultures, arts, civilizations - these are mortal, and their life is to ours as the life of a gnat. But it is immortals whom we joke with, work with, marry, snub, and exploit - immortal horrors or everlasting splendors.”

“God is the only comfort, He is also the supreme terror: the thing we most need and the thing we most want to hide from. He is our only possible ally, and we have made ourselves His enemies. Some people talk as if meeting the gaze of absolute goodness would be fun. They need to think again. They are still only playing with religion. Goodness is either the great safety or the great danger - according to the way you react to it. And we have reacted the wrong way.”

“[The witch] would have known that when a willing victim who had committed no treachery was killed in a traitor’s stead, the Table would crack and Death itself would start working backwards.”

“It is when we notice the dirt that God is most present in us; it is the very sign of His presence.”

“How monotonously alike all the great tyrants and conquerors have been; how gloriously different are the saints.”

“If conversion to Christianity makes no improvement in a man's outward actions – if he continues to be just a snobbish or spiteful or envious or ambitious as he was before – then I think we must suspect that his 'conversion' was largely imaginary; and after one's original conversion, every time one thinks one has made an advance, that is the test to apply. Fine feelings, new insights, greater interest in 'religion' mean nothing unless they make our actual behavior better; just as in an illness 'feeling better' is not much good if the thermometer shows that your temperature is still going up. In that sense the outer world is quite right to judge Christianity by its results. Christ told us to judge by results. A tree is known by its fruit; or, as we say, the proof of the pudding is in the eating. When we Christians behave badly, or fail to behave well, we are making Christianity unbelievable to the outside world. The war-time posters told us that Careless Talk costs Lives. It is equally true that Careless Lives cost Talk. Our careless lives set the outer world taking; and we give them grounds for talking in a way that throws doubt on the truth of Christianity itself.”

“Really, a young Atheist cannot guard his faith too carefully. Dangers lie in wait for him on every side. You must not do, you must not even try to do, the will of the Father unless you are prepared to "know of the doctrine." All my acts, desires, and thoughts were to be brought into harmony with universal Spirit. For the first time I examined myself with a seriously practical purpose. And there I found what appalled me; a zoo of lusts, a bedlam of ambitions, a nursery of fears, a harem of fondled hatreds. My name was legion.”

“He's not safe, but he's good (referring to Aslan, the Lion, in The Lion, the Witch and the Wardrobe)”

“Lightly men talk of saying what they mean. Often when he was teaching me to write in Greek the Fox would say, “Child, to say the very thing you really mean, the whole of it, nothing more or less or other than what you really mean; that’s the whole art and joy of words.” A glib saying. When the time comes to you at which you will be forced at last to utter the speech which has lain at the centre of your soul for years, which you have, all that time, idiot-like, been saying over and over, you’ll not talk about joy of words.”

“Indeed the safest road to Hell is the gradual one--the gentle slope, soft underfoot, without sudden turnings, without milestones, without signposts,...Your affectionate uncle, Screwtape.”

“Surely you know that if a man can't be cured of churchgoing, the next best thing is to send him all over the neighbourhood looking for the church that "suits" him until he becomes a taster or connoisseur of churches.”

“Feeling like the voice she liked best in all the world was calling her name.”

“Spiteful words can hurt your feelings but silence breaks your heart.”