C.S. Lewis’ Critique of “Scientism”

C.S. Lewis held to many of the scientific conclusions of his day. Nonetheless, he was often critical of what others have sometimes called “scientism”—a worldview that treats science as a stand-alone teller of truth without a deeper epistemological basis and thus room for a metaphysics; a form of science that makes absolutist exclusive claims that lead it to assume more jurisdiction than its methodological parameters actually allow.

See the following quote from his lecture, “Is Theology Poetry?” or as we might rephrase it, Is Christianity nothing more than aesthetically pleasing mythology?


“The picture so often painted of Christians huddling together on an ever narrower strip of beach while the incoming tide of ‘Science’ mounts higher and higher corresponds to nothing in my own experience. That grand myth … is not for me a hostile novelty breaking in on my traditional beliefs. On the contrary, that cosmology is what I started from. Deepening distrust and final abandonment of it long preceded my conversion to Christianity. Long before I believed Theology to be true I had already decided that the popular scientific picture at any rate was false. One absolutely central inconsistency ruins it….

The whole picture professes to depend on inferences from observed facts. Unless inference is valid, the whole picture disappears. Unless we can be sure that reality in the remotest nebula or the remotest part obeys the thought laws of the human scientist here and now in his laboratory — in other words, unless Reason is an absolute — all is in ruins. Yet those who ask me to believe this world picture also ask me to believe that Reason is simply the unforeseen and unintended by-product of mindless matter at one stage of its endless and aimless becoming.

Here is flat contradiction. They ask me at the same moment to accept a conclusion and to discredit the only testimony on which that conclusion can be based. The difficulty is to me a fatal one; and the fact that when you put it to many scientists, far from having an answer, they seem not even to understand what the difficulty is, assures me that I have not found a mare’s nest but detected a radical disease in their whole mode of thought from the very beginning. The man who has once understood the situation is compelled henceforth to regard the scientific cosmology as being, in principle, a myth; though no doubt a great many true particulars have been worked into it.

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You should “church shop,” so says Screwtape

“My Dear Wormwood,

You mentioned casually in your last letter that the patient has continued to attend one church, and one only, since he was converted, and that he is not wholly pleased with it. May I ask what you are about? Why have I no report on the causes of his fidelity to the parish church? Do you realize that unless it is due to indifference it is a very bad thing? Surely you know that if a man can’t be cured of churchgoing, the next best thing is to send him all over the neighborhood looking for the church that ‘suits’ him until he becomes a taster or connoisseur of churches.

The reasons are obvious. In the first place the parochial organization should always be attacked, because, being a unity of place and not of likings, it brings people of different classes and psychology together in the kind of unity the Enemy [God] desires. The congregational principle, on the other hand, makes each church into a kind of club, and finally, if all goes well, into a coterie or faction.

In the second place, the search for a ‘suitable’ church makes the man a critic where the Enemy wants him to be a pupil. What He wants of the layman in church is an attitude which may, indeed, be critical in the sense of rejecting what is false or unhelpful, but which is wholly uncritical in the sense that it does not appraise—does not waste time in thinking about what it rejects, but lays itself open in non-commenting, humble receptivity to any nourishment that is going on. (You see how grovelling, how unspiritual, how irredeemably vulgar He is!) This attitude, especially during sermons, creates the condition (most hostile to our whole policy) in which platitudes can become really audible to a human soul. There is hardly any sermon, or any book, which may not be dangerous to us if it is received in this temper. So pray bestir yourself and send this fool the round of the neighboring churches as soon as possible. Your record up to date has not given us much satisfaction.

Your affectionate uncle,
Screwtape”

—C.S. Lewis, The Screwtape Letters

Lunatic, Lord, or Liar (C.S. Lewis)

The following two quotations, from Lewis’ Mere Christianity, constitute Lewis’ well known lunatic, lord, or liar argument, sometimes called Lewis’ “trilemma” or “mad, bad, or God.”

I am trying here to prevent anyone saying the really foolish thing that people often say about Him: “I’m ready to accept Jesus as a great moral teacher, but I don’t accept His claim to be God.” That is the one thing we must not say. A man who was merely a man and said the sort of things Jesus said would not be a great moral teacher. He would either be a lunatic-on a level with the man who says he is a poached egg-or else he would be the Devil of Hell. You must make your choice. Either this man was, and is, the Son of God: or else a madman or something worse. You can shut Him up for a fool, you can spit at Him and kill Him as a demon; or you can fall at His feet and call Him Lord and God. But let us not come with any patronising nonsense about His being a great human teacher. He has not left that open to us. He did not intend to.

We are faced, then, with a frightening alternative. This man we are talking about either was (and is) just what He said or else a lunatic, or something worse.

C.S. Lewis, Mere Christianity, book 2, chapter 3, paragraph 13; chapter 4, paragraph 1.

In short, Lewis argues the only two alternatives besides accepting that Jesus is God is to view him as either an immoral liar or an insane person who did not realize he was lying. Most non-Christians don’t exactly like those two alternatives to this Jesus figure who often seems to them seems like a pretty solid dude–just not God. But Lewis will have none of this riding the fence garbage. A good moral teacher would not claim to be God without actually being so. To falsely claim such, he must needs be either a lunatic or a liar. Thus, as Lewis argues, this common tact of taking Jesus as non-God, non-lord, great-moral-teacher is off the table.

C.S. Lewis on “Hate the sin; love the sinner”

Sometimes this phrase gets a bad rap, and maybe, at times, rightfully so when it is cliché or excusatory for unkind words and actions. But, interestingly, in Mere Christianity, none other than C.S. Lewis gives a defense/explanation of it. I find the way he slices it helpful.

[A]pparently I am allowed to loathe and hate some of the things my enemies do. Now that I come to think of it, I remember Christian teachers telling me long ago that I must hate a bad man’s actions, but not hate the bad man: or, as they would say, hate the sin but not the sinner.

For a long time I used to think this a silly, straw-splitting distinction: how could you hate what a man did and not hate the man? But years later it occurred to me that there was one man to whom I had been doing this all my life-namely myself. However much I might dislike my own cowardice or conceit or greed, I went on loving myself. There had never been the slightest difficulty about it. In fact the very reason why I hated the things was that I loved the man. Just because I loved myself, I was sorry to find that I was the sort of man who did those things. Consequently, Christianity does not want us to reduce by one atom the hatred we feel for cruelty and treachery. We ought to hate them. Not one word of what we have said about them needs to be unsaid. But it does want us to hate them in the same way in which we hate things in ourselves: being sorry that the man should have done such things, and hoping, if it is anyway possible, that somehow, sometime, somewhere, he can be cured and made human again.


C.S. Lewis, Mere Christianity, book 3, chapter 7, paragraph 6-7.