“God is easy to please, but hard to satisfy.”

While the conversion of C. S. Lewis has been the subject of numerous essays, chapters and entire books, his personal spiritual development has, unfortunately, received scant attention.  Even so, we need not wait on some scholar to assemble a guide to Lewis’s spiritual theology.  The core is provided very nicely by Lewis himself in the fourth section of Mere Christianity, “Beyond Personality.”

Lewis asks, “Is Christianity Hard or Easy?”

The Christian way is different: harder, and easier. Christ says “Give me All. I don’t want so much of your time and so much of your money and so much of your work: I want You. I have not come to torment your natural self, but to kill it. No half-measures are any good. I don’t want to cut off a branch here and a branch there, I want to have the whole tree down. I don’t want to drill the tooth, or crown it, or stop it, but to have it out. Hand over the whole natural self, all the desires which you think innocent as well as the ones you think wicked-the whole outfit. I will give you a new self instead. In fact, I will give you Myself: my own will shall become yours.” …

When he said, “Be perfect,” He meant it. He meant that we must go in for the full treatment. It is hard; but the sort of compromise we are all hankering after is harder-in fact, it is impossible. It may be hard for an egg to turn into a bird: it would be a jolly sight harder for it to learn to fly while remaining an egg. We are like eggs at present. And you cannot go on indefinitely being just an ordinary, decent egg. We must be hatched or go bad.

In the next section, “Counting the Costs,” Lewis attends to concerns about his comments on Jesus’s command to “be perfect.”

I find a good many people have been bothered by what I said in the last chapter about Our Lord’s words, “Be ye perfect.” Some people seem to think this means “Unless you are perfect, I will not help you”; and as we cannot be perfect, then, if He meant that, our position is hopeless. But I do not think He did mean that. I think He meant “The only help I will give is help to become perfect. You may want something less: but I will give you nothing less.”

Let me explain. When I was a child I often had toothache, and I knew that if I went to my mother she would give me something which would deaden the pain for that night and let me get to sleep. But I did not go to my mother-at least, not till the pain became very bad. And the reason I did not go was this. I did not doubt she would give me the aspirin; but I knew she would also do something else. I knew she would take me to the dentist next morning. I could not get what I wanted out of her without getting something more, which I did not want. I wanted immediate relief from pain: but I could not get it without having my teeth set permanently right. And I knew those dentists; I knew they started fiddling about with all sorts of other teeth which had not yet begun to ache. They would not let sleeping dogs lie; if you gave them an inch they took a mile.

Now, if I may put it that way, Our Lord is like the dentists. If you give Him an inch, He will take a mile. Dozens of people go to Him to be cured of some one particular sin which they are ashamed of (like masturbation or physical cowardice) or which is obviously spoiling daily life (like bad temper or drunkenness). Well, He will cure it all right: but He will not stop there. That may be all you asked; but if once you call Him in, He will give you the full treatment.

That is why He warned people to “count the cost” before becoming Christians. “Make no mistake,” He says, “if you let me, I will make you perfect. The moment you put yourself in My hands, that is what you are in for. Nothing less, or other, than that. You have free will, and if you choose, you can push Me away. But if you do not push Me away, understand that I am going to see this job through. Whatever suffering it may cost you in your earthly life, whatever inconceivable purification it may cost you after death, whatever it costs Me, I will never rest, nor let you rest, until you are literally perfect-until my Father can say without reservation that He is well pleased with you, as He said He was well pleased with me. This I can do and will do. But I will not do anything less.”

And yet-this is the other and equally important side of it- this Helper who will, in the long run, be satisfied with nothing less than absolute perfection, will also be delighted with the first feeble, stumbling effort you make tomorrow to do the simplest duty. As a great Christian writer (George MacDonald) pointed out, every father is pleased at the baby’s first attempt to walk: no father would be satisfied with anything less than a firm, free, manly walk in a grown-up son. In the same way, he said, “God is easy to please, but hard to satisfy.”

The practical upshot is this. On the one hand, God’s demand for perfection need not discourage you in the least in your present attempts to be good, or even in your present failures. Each time you fall He will pick you up again. And He knows perfectly well that your own efforts are never going to bring you anywhere near perfection. On the other hand, you must realise from the outset that the goal towards which He is beginning to guide you is absolute perfection; and no power in the whole universe, except you yourself, can prevent Him from taking you to that goal. That is what you are in for. And it is very important to realise that. If we do not, then we are very likely to start pulling back and resisting Him after a certain point. I think that many of us, when Christ has enabled us to overcome one or two sins that were an obvious nuisance, are inclined to feel (though we do not out it into words) that we are now good enough. He has done all we wanted Him to do, and we should be obliged if He would now leave us alone. As we say “I never expected to be a saint, I only wanted to be a decent ordinary chap.” And we imagine when we say this that we are being humble.

But this is the fatal mistake. Of course we never wanted, and never asked, to be made into the sort of creatures He is going to make us into. But the question is not what we intended ourselves to be, but what He intended us to be when He made us. He is the inventor, we are only the machine. He is the painter, we are only the picture. How should we know what He means us to be like? You see, He has already made us something very different from what we were. …

But all the time He knew His plan for us and was determined to carry it out. Something the same is now happening at a higher level. We may be content to remain what we call “ordinary people”: but He is determined to carry out a quite different plan. To shrink back from that plan is not humility; it is laziness and cowardice. To submit to it is not conceit or megalomania; it is obedience. …

I find I must borrow yet another parable from George MacDonald. Imagine yourself as a living house. God comes in to rebuild that house. At first, perhaps, you can understand what He is doing. He is getting the drains right and stopping the leaks in the roof and so on: you knew that those jobs needed doing and so you are not surprised. But presently he starts knocking the house about in a way that hurts abominably and does not seem to make sense. What on earth is He up to? The explanation is that He is building quite a different house from the one you thought of- throwing out a new wing here, putting on an extra floor there, running up towers, making courtyards. You thought you were going to be made into a decent little cottage: but He is building a palace. He intends to come and live in it Himself. …

Reading Lewis himself is, of course, the best way to get to know his life and work.  But for those looking for a survey of the specific area of his spiritual development, Seeking the Secret Place: The Spiritual Formation of C. S. Lewis by Lyle W. Dorsett is a very helpful guide.