“The quest of the Inner Ring will break your hearts unless you break it. But if you break it, a surprising result will follow. If in your working hours you make the work your end, you will presently find yourself all unawares inside the only circle in your profession that really matters. You will be one of the sound craftsmen, and other sound craftsmen will know it. This group of craftsmen will by no means coincide with the Inner Ring or the Important People or the People in the Know. It will not shape that professional policy or work up that professional influence which fights for the profession as a whole against the public: nor will it lead to those periodic scandals and crises which the Inner Ring produces. But it will do those things which that profession exists to do and will in the long run be responsible for all the respect which that profession in fact enjoys and which the speeches and advertisements cannot maintain. And if in your spare time you consort simply with the people you like, you will again find that you have come unawares to a real inside: that you are indeed snug and safe at the center of something which, seen from without, would look exactly like an Inner Ring. But the difference is that its secrecy is accidental, and its exclusiveness a by-product, and no one was led thither by the lure of the esoteric: for it is only four or five people who like one another meeting to do things that they like. This is friendship. Aristotle placed it among the virtues. It causes perhaps half of all the happiness in the world, and no Inner Ring can ever have it.”

“Liking an author may be as involuntary and improbable as falling in love.”

“[S]omething inside us, the feeling of resentment, the feeling that wants to get one's own back, must be simply killed. I do not mean that anyone can decide this moment that he will never feel it anymore. That is not how things happen. I mean that every time it bobs its head up, day after day, year after year, all our lives long, we must hit it on the head. It is hard work, but the attempt is not impossible.”

“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.”

“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.”

“Now the trouble about trying to make yourself stupider than you really are is that you very often succeed.”

“She did not shut it properly because she knew that it is very silly to shut oneself into a wardrobe, even if it is not a magic one.”

“Whenever all men are...hastening to be slaves or tyrants we make Liberalism the prime bogey.”

“It is my opinion that a story worth reading only in childhood is not worth reading even then.”

“Further up and further in” 

“But I cannot tell that to this old sinner, and I cannot comfort him either; he has made himself unable to hear my voice. If I spoke to him, he would hear only growlings and roarings. Oh, Adam's son, how cleverly you defend yourself against all that might do you good!”

“In those days a boy on the classical side officially did almost nothing but classics. I think this was wise; the greatest service we can to education today is to teach few subjects. No one has time to do more than a very few things well before he is twenty, and when we force a boy to be a mediocrity in a dozen subjects we destroy his standards, perhaps for life.”

“And as Jill gazed at its motionless bulk, she realized that she might as well have asked the whole mountain to move aside for her convenience.”

“There are only two kinds of people in the end: those who say to God, "Thy will be done," and those to whom God says, in the end, "Thy will be done." All that are in Hell, choose it. Without that self-choice there could be no Hell. No soul that seriously and constantly desires joy will ever miss it. Those who seek find. Those who knock it is opened.”

“A thing may be morally neutral and yet the desire for that thing may be dangerous.”