“Life is too deep for words, so don't try to describe it, just live it. Actually this quote doesn't sound like C.S. Lewis at all. Can anyone provide a source?”

“And he writhed inside at what seemed the cruelty and unfairness of the demand. He had not yet learned that if you do one good deed your reward usually is to do another and harder and better one.”

“One must face the fact that all the talk about His  love for men, and His service being perfect freedom, is not (as one would gladly believe) mere propaganda,  but an appalling truth. He really does want to fill the universe with a lot of loathsome little replicas of  Himself—creatures, whose life, on its miniature scale, will be qualitatively like His own, not because He has absorbed them but because their wills freely conform to His. We want cattle who can finally become food;  (2) He wants servants who can finally become sons. We want to suck in, He wants to give out. We are  empty and would be filled; He is full and flows over. Our war aim is a world in which Our Father Below has  drawn all other beings into himself: the Enemy wants a world full of beings united to Him but still distinct.”

“His face had become very red and his mouth and fingers were sticky. He did not look either clever or handsome, whatever the Queen might say.”

“Good beats upon the damned incessantly as sound waves beat on the ears of the deaf, but they cannot receive it. Their fists are clenched, their teeth are clenched, their eyes fast shut. First they will not, in the end they cannot, open their hands for gifts, or their mouth for food, or their eyes to see.”

“But how can the characters in a play guess the plot? We are not the playwright, we are not the producer, we are not even the audience. We are on the stage. To play well the scenes in which we are "on" concerns us much more than to guess about the scenes that follow it.”

“You've no idea how good an old joke sounds when you take it out again after a rest of five or six hundred years.”

“If there's anyone who can appear before Aslan without their knees knocking, they're either braver than most, or else just silly.”

“It may well be that by trickery of priests men have sometimes taken a mortal's voice for a god's. But it will not work the other way. No one who hears a god's voice takes it for a man's.”

“As he rose to his feet he noticed that he was neither dripping nor panting for breath as anyone would expect after being under water. His clothes were perfectly dry. He was standing by the edge of a small pool—not more than ten feet from side to side in a wood. The trees grew close together and were so leafy that he could get no glimpse of the sky. All the light was green light that came through the leaves: but there must have been a very strong sun overhead, for this green daylight was bright and warm. It was the quietest wood you could possibly imagine. There were no birds, no insects, no animals, and no wind. You could almost feel the trees growing. The pool he had just got out of was not the only pool. There were dozens of others—a pool every few yards as far as his eyes could reach. You could almost feel the trees drinking the water up with their roots. This wood was very much alive.”

“And the Prince stared at her like a man out of his wits.” 

“Not that I am (I think) in much danger of ceasing to believe in God. The real danger is of coming to believe such dreadful things about Him. The conclusion I dread is not 'So there's no God after all,' but 'So this is what God's really like. Deceive yourself no longer.”

“Friendship, then, like the other natural loves, is unable to save itself. In reality, because it is spiritual and therefore faces a subtler enemy, it must, even more wholeheartedly than they, invoke the divine protection if it hopes to remain sweet. For consider how narrow its true path is. Is must not become what the people call a "mutual admiration society"; yet if it is not full of mutual admiration, of Appreciative love, it is not Friendship at all.”

“Good and evil both increase at compound interest.”

“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.”