What Gandalf Knew About the Machine | Pope Leo Quotes Tolkien on AI

SECTION: The Pope Quotes a Wizard

On the fifteenth of May, 2026, Pope Leo XIV released his first encyclical. It is called Magnifica Humanitas — "On Safeguarding the Human Person in the Time of Artificial Intelligence." It runs roughly forty-two thousand words, draws on two hundred and twenty-four citations, and walks through the usual cathedral of authorities a papal document leans on: Augustine, Aquinas, Plato. There is Beethoven. There is Hannah Arendt. There is Martin Luther King Jr. There is Viktor Frankl.

And in paragraph 213, there is something no papal encyclical had ever contained before.

A quotation from J.R.R. Tolkien.

Not from a letter. Not from an essay. From the novel itself — The Return of the King, Book Five, Chapter Nine, the council known as the Last Debate. The speaker is Gandalf. The Pelennor has just been won and lost in the same breath; the city stands, but Théoden lies dead and Faramir near it, and the captains of the West are deciding whether to march on the Black Gate. Gandalf speaks against any fantasy that this is the last war or that they are the ones who will finish history. And the line the Pope chose was this:

"Yet it is not our part to master all the tides of the world, but to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till. What weather they shall have is not ours to rule."

The Pope's own commentary, immediately following, is the gloss of a careful reader. The civilization of love, Leo writes, will not arise from any single or spectacular gesture. It will arise from the sum total of small and steadfast acts of fidelity that serve as a bulwark against dehumanization.

Welcome to Ranger of the Realms. The question this episode tries to answer is the one the Pope's choice forces. Of all the lines in The Lord of the Rings — and there are many that a Catholic reader of Tolkien might quietly cherish — why that one? Why Gandalf, and why at the Pelennor, and why inside an encyclical on artificial intelligence?

The short answer is that Tolkien gave a name to the thing the Church is now trying to name. He called it the Machine. He spent sixty years describing it. And the figure he placed in opposition to it — the one figure on the Free side of the board who could have wielded its master-apparatus and refused — was Gandalf.

This episode is about what Gandalf knew. And why, eighty years after Tolkien wrote it down, the highest teaching office of the Catholic Church decided that what Gandalf knew was the thing the present moment most needed to hear.

SECTION: Tolkien's Third Theme

In 1951, Tolkien sat down to write what would become the most important letter of his life as a writer. The recipient was Milton Waldman, an editor at the publisher Collins. Tolkien was, at that point, trying to persuade Waldman to take on The Silmarillion and The Lord of the Rings together, as a single body of work. The letter is enormous — tens of thousands of words — and in the course of it, Tolkien attempts something he had never attempted in public: a description of what the entire legendarium is about.

He names three master themes. Three concerns that run, he says, through everything he has ever written about Middle-earth.

Fall. Mortality. And the Machine.

Fall and Mortality are familiar Catholic ground. A reader could see them coming. The third one is the surprise. The third one Tolkien knew he had to define, because the word does not, on its surface, look like a theological category at all. And the definition he offers is one of the most important sentences he ever wrote about his own work.

By the Machine, Tolkien says, he means all use of external plans or devices — apparatus — instead of development of the inherent inner powers or talents. Or even the use of those talents with the corrupted motive of dominating. Bulldozing the real world, he writes. Coercing other wills.

Notice what this definition refuses to do. It refuses to identify the Machine with industry. It refuses to identify it with technology in any narrow sense. The Machine, for Tolkien, is not a category of object. It is a category of stance. It is what a will does when, frustrated by the gap between what it wants and what it can directly accomplish, it builds an apparatus to close that gap by force.

And here is where the definition becomes strange. In the same passage, Tolkien insists that what he calls the Machine is "more closely related to Magic than is usually recognised." In Tolkien's moral grammar, magic and machinery are not opposites. They are the same thing wearing different costumes.

The test that distinguishes good making from bad making is not whether it uses spells or gears. The test is what it does to other wills. The Elves at their best practice what Tolkien calls Art — sub-creation, making under God, making that delights in the thing made and lets it be itself. The Elves at their worst — at Eregion, where they came nearest to falling — practiced what he calls magic-and-machinery, the perversion of art into power. The verb that signals the fall, in every case, is dominate.

This is the conceptual key to everything that follows. The Machine is a stance the will can take. It can take that stance with a sword. It can take it with a ring. It can take it with a factory. It can take it, in 2026, with a model trained on a trillion tokens of human speech.

The apparatus is incidental. The stance is the thing.

SECTION: Morgoth's Prototype, Sauron's Industry

The Machine has a history inside Middle-earth, and it begins before any history we are usually told. It begins with Melkor — Morgoth — the first of the Valar to want a creation that was his own rather than a sub-creation under Eru. Tolkien is very specific about what that desire produces. It does not produce anything new. Morgoth cannot make. Only Eru can make. What Morgoth can do is mar what has been made, and bend it to serve him.

So he takes captured Elves and works on them in the pits of Utumno, and out of that torment come the Orcs — Elves remade as instruments. He takes the model of the Ents, the great tree-shepherds, and produces Trolls in cruel mockery. He steals the Silmarils — three jewels that hold the imperishable light of the Two Trees, the highest sub-creation any Eldar will ever achieve — and he does what the Machine always does with beauty. He sets them in an iron crown. He turns light into an instrument of dominion, worn on his own brow.

This is the Machine in prototype. Sub-creation captured, re-purposed, externalized as apparatus of rule.

There is a late essay, edited by Christopher Tolkien and published in Morgoth's Ring, that pushes this even further. The argument is that Morgoth, unable to dominate Arda from the outside, eventually poured so much of his own being into the substance of the world itself that the world became, in a sense, his ring. Arda Marred — corruption no longer concentrated in a person but dispersed into the matter of creation, present in the ground, in the weather, in the very metals miners draw out of the earth. The Machine, in this version, has scaled up beyond personhood. It has become a condition.

Sauron, who began as a Maia of Aulë — the same Vala of craft from whose order Saruman will also come — is the second-stage form of the same impulse. Sauron is what the Machine looks like when it organizes itself. He is institutional where Morgoth was titanic. He builds bureaucracies. He breeds armies. He sends embassies. He instructs the smiths of Eregion in techniques they should not learn, and when they have learned them, he forges his masterwork in the fire of Orodruin: a single externalized will that can act, at a distance, upon every other will bound by the lesser rings.

Sauron is the Machine industrialized.

And then comes the line that reorganizes the whole story.

At the Last Debate, with the city saved and the Black Gate yet to be challenged, Gandalf is asked, in effect, whether this is the end. Whether throwing the Ring into the Mountain will close the account. Gandalf's answer is no. "Other evils there are that may come," he says, "for Sauron is himself but a servant or emissary."

Sauron — the Dark Lord, the Necromancer of Dol Guldur, the architect of Barad-dûr — is not the final form of the thing they are fighting. He is the current instance of it. Morgoth was a previous instance. Saruman, in his smaller way, is a contemporary instance. The Machine outlasts any single dark lord because the Machine is a stance, and the stance can be taken up again, by anyone, in any age.

This is the first thing Gandalf knows. The enemy is older than its current face.

SECTION: The Ring as Externalized Will

To understand why Gandalf will not touch the Ring, you have to understand what the Ring actually is in Tolkien's metaphysics. It is not, despite what the films sometimes suggest, simply a powerful magic item. It is the Machine made jewelry.

In a 1963 letter to a reader named Eileen Elgar, Tolkien describes the Ring with a precision that sounds almost like physics. Potency — power — he writes, if it is to be exercised and to produce results, must be externalized. It must be made objective. And in being externalized, it passes, to a greater or lesser degree, out of its maker's direct control.

Read at the right angle, this is a description of every device humans have ever built. The hammer extends the fist, and the fist becomes hostage to the hammer. The factory extends the craftsman, and the craftsman becomes a worker on the line. The model extends the mind, and the mind begins to think in the model's idiom. To exercise a will at scale, you must externalize it; and the moment you externalize it, the thing you made begins to acquire its own gravity, its own logic, its own demands.

Sauron poured himself into the One Ring. The bargain was that the apparatus would let him act on every other will in Middle-earth that wore a lesser ring. The cost was that his own being now lived outside himself, in a circle of gold, and could be taken from him.

He became hostage to his own apparatus. This is not a side-effect of the Machine. This is the Machine.

Which is why the moment in The Fellowship of the Ring at Bag End is more important than it sometimes feels. Frodo, terrified, offers the Ring to Gandalf. Gandalf does not lecture. He does not philosophize. He shouts. He tells Frodo not to tempt him. He says he would take the Ring out of a desire to do good — and that this is precisely why he must not take it.

In a 1956 letter to Michael Straight, Tolkien explained what that scene means. The Ring, he wrote, could not be wielded for good by anyone whatsoever. Even Gandalf, with the best will in the world, would have become only a righteous Sauron. The thing in his hand would not have cared about the motive of the user. It has its own grammar, and that grammar is domination. Take it up for the kindest of reasons, and within a year your kindness will be administered by terror.

This is why the council at Rivendell does not, in the end, give the Ring to the strongest. The fellowship does not march it to Mordor under Aragorn's command, or Galadriel's, or Gandalf's. The plan is to give it to the people in the room who want power the least.

Refusing the apparatus is wisdom. That is the second thing Gandalf knows.

SECTION: Saruman, or How the Wise Fall

If Sauron shows the Machine in its mature industrial form, Saruman shows how the Machine recruits the people best equipped to resist it.

Saruman was sent to Middle-earth, like Gandalf, as one of the Istari — the wizards, spirits clothed in the bodies of old men, dispatched by the Valar with an explicit prohibition. They were not to match Sauron with comparable power. Their commission was to instruct, to embolden, to resist by counsel. Saruman was the head of their order. He was the head of the White Council. He studied the lore of the rings more deeply than anyone else on the side of the Free Peoples. He studied the palantíri. By every external measure, he was the most equipped of the Wise.

He was also, by Tolkien's lights, the type-case of how the Wise fall.

Tolkien is unusually direct about the mechanism. In a letter discussing the wizards' particular temptation, he writes that their characteristic failure mode was impatience — a desire to force others to their own good ends, and so, inevitably, at last, to the mere desire to make their own wills effective. The sequence matters. It does not begin with malice. It begins with the wish to do good. It moves through impatience with people who will not be helped quickly enough. It ends with the desire to make one's own will effective — which is, in Tolkien's grammar, the precise definition of the Machine.

This is the most important thing to understand about how the Machine actually enters a life or an institution. It almost never enters under its own name. It enters under the name of efficiency. It enters under the name of saving labor. It enters under the name of helping people who cannot, at the pace one would prefer, help themselves. The Saruman move is not "I want to dominate." The Saruman move is "I cannot wait for the slow way."

Tolkien knew exactly what he was doing when he named this figure. Saruman is built on the Old English word searu — and searu means, all at once, a device, a contrivance, a cunning skill, and a machine. The wizard's tower, Orthanc, is glossed bilingually in Tolkien's notes: in Sindarin it is Mount Fang, but in Old English orþanc means, again, a cunning device, a mechanical contrivance. Saruman lives in a building literally named Machine, and his own name, in plain Anglo-Saxon, is Machine-man. Tolkien is not subtle when he wants something noticed.

Treebeard says it most plainly. After Saruman has felled the forest and dug the pits and lit the furnaces and bred the Uruk-hai, the Ent's summary is six words long. He has a mind of metal and wheels. And then the line that follows, which is the diagnosis under the diagnosis: He does not care for growing things, except as far as they serve him for the moment.

The Machine cannot tolerate growth. Growth is slow. Growth has its own time and its own way. The Machine wants manufacture — uniform output, on schedule, to specification. Saruman did not begin caring nothing for growing things. He began caring nothing for slow things, and from there the descent is short.

There is also the exchange that Gandalf reports to the Council of Elrond, when Saruman has summoned him to Isengard and reveals the change of his robe. Saruman of the White is now Saruman of Many Colours. White, he sneers, is only a beginning — white cloth may be dyed, the white page overwritten, the white light broken into its components. And Gandalf answers: in which case it is no longer white. And then the line that contains an entire epistemology in fifteen words. He that breaks a thing to find out what it is has left the path of wisdom.

That is the Machine's theory of knowledge, named and refused in a single sentence. Knowing by breaking. Knowing by dissection. Knowing by reduction to components one can manage. Saruman is, in this exchange, the proto-scientist of domination — the man for whom the world is a problem to be solved by being taken apart.

And there is one more piece of the Saruman puzzle that the whole episode rests on. In a 1956 letter, Tolkien identified what he considered the central diagnostic assumption of the modern age. The most widespread assumption of our time, he wrote, is that if a thing can be done, it must be done. This seems to me wholly false.

That sentence is the Machine's psychology in twelve words. Capability becomes obligation. Possibility becomes demand. The fact that we could implies that we must. Saruman lives inside this logic completely. He could industrialize, so he did. He could breed, so he did. He could pact with Sauron, so he did — and the moment he chose each of those things, the next thing was no longer a choice.

The opposite, Tolkien said, was a word he chose carefully. Abnegation. A deliberate refusal to do some of the things it is possible to do. The Wise are the ones who keep their abnegation intact. Saruman lost his.

SECTION: The Last Debate

Which brings us back to the line the Pope chose.

The Last Debate happens after the Pelennor and before the march on the Morannon. The captains of the West are deciding whether to gamble everything on a final assault that, in purely strategic terms, has almost no chance of success. The point of the march, as Gandalf explains it, is not to win the war. The point is to draw the Eye, to occupy Sauron's attention, so that two small figures crawling up the slopes of Orodruin will have the cover they need to reach the Crack of Doom.

In other words: the captains of the West are being asked to make their entire army into a feint. The real action is not theirs.

This is the immediate context for Gandalf's speech, and it matters, because the speech is not an abstract philosophical lecture. It is the explanation a Maia gives to mortal kings about why they are about to march under an inverted theory of victory. The strongest people on the field are about to not finish the war. The hobbits are going to finish it. And the captains have to march anyway, knowing this, accepting that their function is to give cover, not to win.

It is not our part, Gandalf says, to master all the tides of the world. But to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till. What weather they shall have is not ours to rule.

There are three moves in that passage, and each one is a refusal of the Machine.

The first move is the refusal of totalization. It is not our part to master all the tides of the world. The Machine, in every form, promises mastery — promises that with enough apparatus, you can finally close the gap between will and outcome and rule the weather. Gandalf says: that is not the work. The work is not to rule the weather.

The second move is the acceptance of mortality and generational handoff. Those who live after may have clean earth to till. The Machine, in Tolkien's letters, is repeatedly tied to the rebellion against mortality — the refusal to accept the limits of one's own time and reach. Gandalf accepts the limit. The point is not to be the generation that finishes the work. The point is to leave the work better than you found it, for hands you will never meet.

The third move is the agricultural register. Uprooting the evil in the fields that we know. This is the language of slow work, manual work, work done in a particular place where one is known and knows others. It is the deliberate opposite of scaled abstraction. The Machine works on populations. Gandalf works in fields. The Machine optimizes globally. Gandalf weeds locally.

Notice who is being asked to absorb this. Aragorn — who will be king and could conceivably reach for mastery. Éomer — whose people have just lost a beloved monarch and have every reason to want totalizing revenge. Imrahil — the most cultured of the southern princes. These are the figures most capable of trying to take the tide. Gandalf is telling them: not your part.

And the form of the answer he models, the entire fellowship has already enacted. They gave the apparatus to the people who could not be tempted by it. Not because hobbits are weak — Tolkien is very firm on this in his letters — but because the Machine has nothing in them to grip. Frodo does not want to be Lord and God of a private creation. He wants the Shire, and a pipe, and a second breakfast. The recruiting voice of the Ring tries every register it has, and on hobbits it works only partially, and only over enormous time. Even then, at the very end, on the precipice, when Frodo finally cannot give the Ring up — even that failure is taken up into the larger work, because the small mercies that the hobbits did show along the way, the pity that spared Gollum and spared him again, have produced a creature whose teeth, in the last possible second, finish what Frodo's will cannot.

Tolkien is explicit, in a letter to Michael Straight, that Frodo failed. That the Quest was bound to fail, considered as a piece of world-plan. And that the work was finished anyway, because the accumulated small acts of mercy — Bilbo's, Frodo's, Sam's — had created the conditions under which Providence could carry the thing across the line.

This is the deepest level of the answer the Last Debate is gesturing at. The Machine concentrates. It wants one figure, one apparatus, one decision that settles everything. The opposite of the Machine is not a different big decision. It is the slow accumulation of small fidelities — most of them invisible, most of them unrewarded — until the situation has been quietly changed underneath the level at which the Machine knows how to look.

That is the third thing Gandalf knows. Mastery is not the work. The work is local, mortal, and slow. And the climax is not carried by the strong.

SECTION: The Civilization of Love

Which finally brings the episode home.

Tolkien spent the 1940s watching what he called, in a letter to his son Christopher, the first War of the Machines. He wrote, in early 1945, that the war was teaching its winners how to be more like Mordor in order to defeat Mordor — that the price of conquering Sauron with the Ring would be to breed new Saurons, and slowly turn Men and Elves into Orcs. He wrote that the Machines were going to be enormously more powerful in the postwar world, and asked, with a flatness that has aged into something close to prophecy: what's their next move?

The next move — eighty years on — is the one the Pope's encyclical was written to address.

Magnifica Humanitas contains a chapter titled "Technology and Dominance" and another titled "Safeguarding Humanity at a Time of Transformation." The Tolkien quotation lands in the second of these. Around it, the encyclical contrasts two civilizational stances. One it calls the Babel stance — technology as the assertion of human self-sufficiency, the building of a tower that will reach the sky and prove that no Creator is needed. The other it calls the Jerusalem stance — technology as a means of communion, oriented toward the human person, restrained by the recognition that not everything possible is therefore obligatory.

Gandalf, the Pope is saying, belongs on the Jerusalem side. Or more precisely: the line Gandalf speaks at the Last Debate is, in compressed form, what a Jerusalem stance toward the present technological moment would actually sound like.

There is a sub-current to this choice that did not go unnoticed in the days after the encyclical's release. The largest data and surveillance company associated with the present generation of frontier AI is named, by its founder's deliberate choice, after the seeing-stones of Middle-earth. Palantir. The reference is to instruments of vast sight — devices that promise their user the ability to see everything, everywhere, at once. In the book, the palantíri are precisely the apparatus that breaks anyone who tries to use them without already being their master. Saruman is corrupted by one. Denethor is destroyed by one. Aragorn alone can wrestle a palantír, and even he pays for the contest.

Several Catholic commentators noticed, in the week after the encyclical was released, that Pope Leo had been offered, by the surrounding culture, a Tolkienian image of AI as instrument of mastery — the palantír as seer-stone, the tech-founder as wise king finally equipped to read the world. And the Pope had reached past that image, into the same novel, and chosen instead a wizard refusing to rule the weather and pointing at a hobbit walking up a volcano with a ring he does not want.

That is not an accident of citation. It is a deployment.

What Gandalf knew — and what the Pope, by quoting him, is asking the Church to remember — is that the Machine is portable. It can wear industrial clothes, as it did at Isengard. It can wear magical clothes, as it does in a circle of gold. It can wear algorithmic clothes, as it does in a server farm. The costume changes. The stance does not. The stance is always the same: the will, frustrated by the gap between desire and effect, builds an apparatus to close the gap by force, and the thing it built, once built, begins to administer the user.

And the answer is also always the same. Refuse the totalizing promise. Accept that one will not be the generation that finishes history. Work in the fields one knows. Show mercy in small unwitnessed ways. Trust that the accumulated weight of small fidelities is, in the long arithmetic of grace, the thing that actually changes the world — even when the Machine, looking at the only metrics it knows how to read, sees nothing of consequence happening at all.

That is what Gandalf knew about the Machine. It is older than any of its faces. It cannot be safely used. It can only be refused. And the refusal, to count, has to be embodied in a life — local, mortal, slow, and small.

The Pope, reading carefully, found that summary in eighty-two words of dialogue spoken by a wizard to a king on the day after a battle. And in May of 2026, he placed it inside the Church's highest ordinary teaching authority, and addressed it to a civilization that, for the first time in its history, is being asked whether it can keep its abnegation intact.