VII

MY DEAR WORMWOOD,

Has no one ever told you about the law of Undulation?

Humans are amphibians - half spirit and half animal. ( The Enemy's determination to produce such a revolting hybrid was one of the things that determined Our Father to withdraw his support from Him. ) As spirits they belong to the eternal world, but as animals they inhabit time. This means that while their spirit can be directed to an eternal object, their bodies, passions and imaginations are in continual change, for to be in time means to change. Their nearest approach to consistency, therefore, is undulation - the repeated return to a level from which they repeatedly fall back, a series of troughs and peaks. If you had watched over your patient carefully you would have seen this undulation in every department of his life - his interest in his work, his affection for his friends, his physical appetites, all go up and down. As long as he lives on earth periods of emotional and bodily richness and liveliness will alternate with periods of numbness and poverty. They dryness and dullness through which your patient is now going through are not, as you fondly suppose, your workmanship; they are merely a natural phenomenon which will do us no good unless you make a good use of it.

To decide what the best use of it is, you must ask what use the Enemy wants to make of it, and then do the opposite. Now it may surprise you to learn that in His efforts to get permanent possession of a soul, He relies on the troughs even more than on the peaks; some of His special favourites have gone through longer and deeper troughs than anyone else. The reason is this. To us a human is primarily food; our aim is the absorption of its will into ours, the increase of our own area of self-hood at its expense. But the obedience the enemy demands is quite a different thing. 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 propoganda, 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; 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 things into himself: the Enemy wants a world full of beings united to Him but still distinct.

And that is where the troughs come in. You must have often wondered why the Enemy does not make more use of His power to be sensibly present to human souls in any degree He chooses and at any moment. But you now see that the Irresistible and the Indisputable are the two weapons which the very nature of His scheme forbids Him to use. Merely to over-ride a human will ( as His felt presence in any but the faintest and most mitigated degree would certainly do ) would be for Him useless. He cannot ravish. He can only woo. For His ignoble idea is to eat the cake and have it; the creatures are to be one with Him, but yet themselves; merely to cancel them or assimilate them , will not serve.........

Your affectionate uncle,

SCREWTAPE

Idon'tliketroughs.