No algorithm can make war morally acceptable.
On the 135th anniversary of Rerum Novarum, Pope Leo XIV issued Magnifica Humanitas, his first social encyclical, placing artificial intelligence within the Church's enduring conversation about human dignity and economic justice. As industrial machinery once threatened to reduce workers to instruments of profit, digital systems now risk reducing persons to data points—their employment, credit, and healthcare decided by algorithms no one can fully see or contest. The Pope's central warning is not against technology itself but against the moral abdication that follows when we mistake mathematical precision for impartiality, and allow machines to carry decisions that belong to human conscience. His call is neither rejection nor surrender, but discernment: to build not Babel's concentrated power, but Jerusalem's distributed responsibility.
- Algorithms are not neutral—they carry the values of their makers, and delegating moral decisions to them makes injustice invisible and responsibility impossible to assign.
- Digital power is concentrating in the hands of a few transnational corporations whose reach now exceeds that of many governments, turning data into an instrument of control over billions.
- New forms of slavery are already operating inside the digital economy—children mining rare minerals, invisible workers classifying data, and trafficking networks enabled by digital platforms.
- The Pope calls for data to be treated as a collective good, for autonomous weapons to be rejected outright, and for education that teaches people when not to use AI.
- Against transhumanist logic that frames human limits as problems to be engineered away, the encyclical insists that compassion, care, and wisdom grow precisely through vulnerability—not despite it.
- The encyclical lands not as condemnation but as invitation: toward a 'civilization of love' built daily through dignified work, shared responsibility, and technology placed in service of everyone's good.
On May 15th, 2026—exactly 135 years after Leo XIII's Rerum Novarum confronted the upheavals of industrial capitalism—Pope Leo XIV signed Magnifica Humanitas, turning the full weight of Catholic social teaching toward artificial intelligence. The parallel is deliberate: as factories once threatened to strip workers of dignity, digital systems now govern access to employment, credit, and healthcare through processes that are opaque, unchallengeable, and falsely presented as objective.
The encyclical's foundational claim is that no algorithm is neutral. Every system encodes the values and interests of those who built it, and the appearance of mathematical precision is not the same as impartiality. When moral decisions are delegated to machines, responsibility dissolves—injustice becomes invisible, and no one can be held to account. The Pope names this 'desresponsabilização,' a moral abdication he identifies as a grave threat to democratic life.
To frame his argument, Leo XIV draws on two biblical images. Babel represents the concentration of power in the hands of a few, built on uniformity and ambition, ending in fragmentation. Jerusalem represents distributed responsibility—each family rebuilding its section of the wall, no one exempt, no one dominant, the work done in relationship and in God's presence. The question he poses to the present moment is stark: which city are we building?
The encyclical addresses work, power, and the body with equal seriousness. Technology that relieves people of dangerous or degrading labor is welcomed—but not a logic of short-term profit that systematically eliminates employment and treats people as data to be optimized. The concentration of digital infrastructure in private, transnational hands demands new regulation and transparency. Data, the Pope insists, is not the property of those who extract it; it belongs to the many who generate it and must be governed as a common good.
Transhumanism is engaged seriously rather than dismissed. When humans are imagined as material to be perfected or transcended, the vulnerable become expendable—the price of species optimization. Christian humanism counters that humans flourish not despite their limits but through them. The same logic extends to autonomous weapons: no algorithm can make war morally acceptable, and no machine can bear responsibility for a lethal decision.
The encyclical asks forgiveness for the Church's historical silence on slavery, and sounds an alarm for its present forms—invisible data-classification labor, children extracting rare minerals, trafficking networks running on digital platforms. Past failure must become present courage.
The document closes not with condemnation but with a horizon: the civilization of love. Not a utopia deferred to the end of time, but the work of each day—dignified labor, data treated as shared inheritance, schools that teach questioning rather than answer consumption, communities that protect the vulnerable. The human heart's capacity to love, forgive, and hope, the Pope wagers, is irreducible to any calculation—and it is that heart which must guide the tools, not the other way around.
On May 15th, 2026, Pope Leo XIV signed his first social encyclical, Magnifica Humanitas, a document that places artificial intelligence squarely within the Church's century-old conversation about human dignity and economic justice. The timing was deliberate: exactly 135 years after Pope Leo XIII issued Rerum Novarum in response to industrial upheaval, his namesake now addresses the digital revolution with the same moral seriousness his predecessor brought to factories and labor.
The encyclical begins with a fundamental claim: technology is not neutral. Every algorithm, every system, every platform carries within it the values, priorities, and interests of those who built it. To call an algorithm objective is to mistake the appearance of mathematical precision for actual impartiality. What looks like pure logic is always human logic—capable of both generosity and ambition, both error and insight. This distinction matters because it means we cannot hide behind the machine when things go wrong. We cannot say the algorithm decided; someone decided to build the algorithm that way.
To structure his argument, Pope Leo XIV reaches back to scripture, using two biblical images as interpretive keys. Babel represents humanity's attempt to build power without reference to God, relying on uniformity that erases difference and ambition that dismisses divine blessing. The result, as Genesis tells it, was not unity but scattering. Jerusalem, by contrast, emerges from shared responsibility: each family receives a section of the wall to rebuild, no one is exempt, no one dominates. The work happens in God's presence and begins with care for relationships before stones are laid. The Pope's question to our moment is direct: are we building Babel or Jerusalem? Are we concentrating power in the hands of a few, or distributing responsibility so innovation serves everyone?
What distinguishes this encyclical is how thoroughly it embeds the AI question within Catholic social teaching rather than treating it as a separate concern. The Pope traces the arc from Leo XIII through Francis, showing that the great principles—human dignity, the common good, universal destination of goods, subsidiarity, solidarity, justice—are not historical artifacts but living tools for reading the present. The factories have become digital platforms. The industrial working class has become billions of people whose data is harvested, whose employment is decided by algorithms, whose access to credit and healthcare is determined by systems no one can fully see or challenge.
The encyclical devotes careful attention to what artificial intelligence actually is and is not. These systems can imitate human intelligence and often exceed it in speed and computational reach. But they lack something fundamental: they do not live experience, do not possess bodies, do not mature through relationships, do not know love or friendship or responsibility. They can simulate empathy. They can mimic affectionate language. But they cannot understand what they produce because they do not inhabit the emotional, relational, and spiritual horizon where humans become wise. This distinction is not technical but anthropological, and it matters urgently. When we delegate moral decisions to machines—who gets hired, who receives credit, which patients get triaged first, how students are evaluated—we dissolve responsibility. Injustice becomes invisible. The Pope calls this "desresponsabilização," a kind of moral abdication, and he identifies it as a grave threat to democratic life.
Work occupies a central place in the encyclical, as it has throughout Catholic social doctrine. Work is not merely survival; it is how humans express dignity, mature, and participate in creation. Automation and artificial intelligence are transforming this reality rapidly. The Pope acknowledges that technology can relieve people from heavy, repetitive, dangerous labor—and welcomes this. But he warns against a logic of short-term profit that systematically sacrifices employment, reducing people to data to be optimized. He also addresses a newer threat: the concentration of digital power in the hands of private, often transnational corporations whose resources and reach exceed those of many governments. These platforms define the rules of access, visibility, and participation for billions. Data is collected at massive scale and weaponized as an instrument of control. The Pope is unequivocal: this demands new forms of regulation, transparency, and oversight. Data is not the property of those who extract it; it is the fruit of many contributions and must be treated as a common or collective good.
The encyclical engages transhumanist and posthumanist currents seriously, not dismissively. When human beings are treated as material to be perfected or transcended, it becomes easier to decide that some are less useful, less desirable, less worthy. In the name of progress, the vulnerable can be imagined as the price of species optimization. Against this logic, Christian humanism insists that humans flourish not despite their limits but often through them. Compassion, care, spiritual experience, worship—these germinate precisely where we are vulnerable. The Pope also confronts the normalization of war in public discourse and the rehabilitation of force as an instrument of international policy. Artificial intelligence accelerates this danger: autonomous weapons systems make conflict more viable and less subject to human control. No algorithm can make war morally acceptable. No machine can assume responsibility for a lethal decision. To delegate such responsibility to automated systems is a form of moral escape that Christian conscience cannot accept.
Education receives urgent attention. We live in an age of unprecedented access to information yet growing difficulty with discernment, reflection, and meaning. Digital speed creates a culture of the immediate that weakens the patience learning requires. Educating in the age of artificial intelligence means, among other things, teaching people when not to use it. The Pope suggests an "AI fast"—not Luddism but the recognition that certain learning demands time, silence, error, correction, experiences that machines can simulate but not provoke. In one of the encyclical's most courageous passages, Pope Leo XIV asks forgiveness for the Church's long silence on slavery. He does not dwell in historical guilt but sounds an alarm for the present: new forms of slavery linked to the digital economy—invisible labor classifying data, children extracting rare minerals, human trafficking facilitated by digital platforms—cannot be tolerated with the same complicit silence of other eras. The memory of past failures must become discernment and courage now.
The encyclical concludes not with a technical manual or a catalog of condemnations but with a horizon: the civilization of love. A phrase from Paul VI, recovered by John Paul II and Francis, now reframed by Leo XIV for an unprecedented moment. This civilization is not a utopia awaiting the end of time. It is the work of each day—disarmed words, dignified work, data treated as common good, schools that teach questioning rather than answer consumption, communities that care for the vulnerable instead of discarding them. Artificial intelligence is powerful. But the human heart, with its capacity to love, forgive, care, and hope, is irreducible to any calculation. That is the encyclical's wager: that the magnificent humanity created by God will not be replaced or surpassed but will welcome the gifts of technique in service of everyone's good. Like Nehemiah facing the ruins of Jerusalem, we are invited to pray, plan, build, and persist—each with our section of the wall—until the city becomes habitable for all.
Notable Quotes
Technology is not neutral; it carries the values, priorities, and interests of those who built it— Pope Leo XIV, Magnifica Humanitas
When an algorithm decides who deserves what without anyone assuming the weight of the choice, responsibility dissolves and injustice becomes invisible— Pope Leo XIV, on algorithmic decision-making in employment, credit, and healthcare
The Hearth Conversation Another angle on the story
Why does the Pope reach back to Babel and Jerusalem? Why not just say what he thinks about AI directly?
Because those images do something direct argument cannot. Babel shows what happens when power concentrates and difference disappears—it's not unity, it's scattering. Jerusalem shows the alternative: shared work, distributed responsibility, each person with their piece. The reader sees the choice before being told what to choose.
The encyclical seems to say algorithms aren't neutral. But doesn't that risk making them sound more dangerous than they are?
It's the opposite. Saying they're neutral is what makes them dangerous. If an algorithm is just math, then no one is responsible when it harms someone. But algorithms are choices—about what to measure, what to optimize, whose interests matter. Once you see that, you can ask: whose choices are these? Who benefits? That's when accountability becomes possible.
The Pope distinguishes between what AI can do and what humans are. Isn't that obvious?
It seems obvious until you watch it disappear in practice. We delegate hiring decisions to algorithms and call it objective. We let systems decide credit access and call it efficient. We're treating the simulation as if it were the real thing—and that's when the distinction matters most. The Pope is saying: remember what you're actually doing when you hand over a moral decision to a machine.
What about the work question? Doesn't technology always displace labor?
The Pope doesn't say technology shouldn't change work. He says the logic of short-term profit shouldn't be allowed to sacrifice people systematically. There's a difference between relieving someone from dangerous, repetitive labor and using automation as an excuse to eliminate jobs and reduce people to data. The question is: who decides, and for whose benefit?
The encyclical mentions data as a common good. How would that actually work?
It's a radical reframing. Right now, whoever collects data owns it. But data is made from the traces of billions of lives—our searches, our movements, our choices. The Pope is saying that's not private property; it's the fruit of collective contribution. Treating it as common good means new rules about who can use it, how, and for what. It's not a technical fix; it's a political one.
Why does the Pope ask forgiveness for the Church's silence on slavery?
Because he's warning that the Church cannot repeat that failure now. Modern slavery exists in the digital economy—invisible labor, child miners, trafficked people. The memory of past complicity should sharpen present conscience. He's saying: we know what silence costs. We cannot afford it again.