“Good and evil both increase at compound interest.”

“A Christian society is not going to arrive until most of us really want it: and we are not going to want it until we become fully Christian. I may repeat "Do as you would be done by" till I am black in the fact, but I cannot really carry it out till I love my neighbour as myself: and I cannot learn to love my neighbour as myself till I learn to love God: and I cannot learn to love God except by learning to obey Him. And so, as I warned you, we are driven on to something more inward - driven on from social matters to religious matters.”

“Whenever you are fed up with life, start writing: ink is the great cure for all human ills, as I have found out long ago.”

“Pain insists upon being attended to. God whispers to us in our pleasures, speaks in our consciences, but shouts in our pains. It is his megaphone to rouse a deaf world.”

“By starving the sensibility of our pupils we only make them easier prey to the propagandist when he comes. For famished nature will be avenged and a hard heart is no infallible protection against a soft head.”

“Affection is responsible for nine-tenths of whatever solid and durable happiness there is in our natural lives.”

“The love of knowledge is a kind of madness.”

“The promise, made when I am in love and because I am in love, to be true to the beloved as long as I live, commits me to being true even if I cease to be in love. A promise must be about things that I can do, about actions: no one can promise to go on feeling in a certain way. He might as well promise to never have a headache or always to feel hungry.” 

“Every age has its own outlook. It is specially good at seeing certain truths and specially liable to make certain mistakes. We all, therefore, need the books that will correct the characteristic mistake of our own period. And that means the old books.”

“One of the reasons why it needs no special education to be a Christian is that Christianity is an education itself.”

“Of course, I quiet agree that the Christian religion is, in the long run, a thing of unspeakable discomfort. But it does not begin in comfort; it begins in the dismay and it is no use at all trying to go on to that comfort without first going through that dismay. In religion, as in war and everything else, comfort is one thing you cannot get looking for it. If you look for the truth, you may find comfort in the end: if you look for comfort you will not get either comfort or truth-only soft soap and wishful thinking to begin with and the in the end, despair.”

“Even I never dreamed of Magic like this!”

“In a sort of ghastly simplicity we remove the organ and demand the function. We make men without chests and expect of them virtue and enterprise. We laugh at honour and are shocked to find traitors in our midst. We castrate and bid the geldings be fruitful.”

“For you will certainly carry out God's purpose, however you act, but it makes a difference to you whether you serve like Judas or like John.”

“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.”