1. AI is a new industrial revolution, and the Church's response is Rerum Novarum.
The frame Pope Leo XIV uses is not "AI as a tool" or "AI as a risk" but "AI as a structural transformation on the scale of the Industrial Revolution." This frame was established within forty-eight hours of his election, when he told the College of Cardinals he chose the name Leo in honor of Pope Leo XIII, who issued the 1891 encyclical Rerum Novarum in response to industrial capitalism. Leo XIV said the Church now offers the same social teaching tradition in response to AI.
The frame matters because it sets the genre of the conversation. AI is not a discrete moral question (Is this AI use permissible?) but a civilizational one (How do we order economic and social life when machines do what humans used to do?). Rerum Novarum did not answer specific questions about specific factory practices. It articulated principles that shaped a century of labor law, union rights, and economic policy. Leo XIV is signaling the same scale of response for AI.
Source: First address to the College of Cardinals, May 10, 2025.
2. The question AI poses is anthropological, not technological.
Pope Leo XIV's clearest formulation of this idea appears in his January 2026 message for the World Day of Social Communications. He wrote that the challenge AI poses is "not technological, but anthropological." Meaning: the deepest question is not what machines can do. It is what humans are, and what we become as we interact with these systems.
This reframing is the single most important move in Leo XIV's teaching so far. It refuses the common AI debate, in which one side asks whether AI is safe and the other asks whether it is useful. Leo XIV asks instead what AI does to the human person who uses it, depends on it, or is replaced by it. The metric is not capability. The metric is human formation.
The implication is practical. An AI tool that performs a task brilliantly but corrodes the user's ability to think, relate, or judge is, on this view, a moral problem regardless of its technical excellence. The standard is not whether the technology works. The standard is what kind of humans it produces.
Source: Message for the 60th World Day of Social Communications, January 24, 2026.
3. AI must serve the common good, not concentrate wealth and power.
In a December 2025 address to participants in an AI conference in Rome, Pope Leo XIV asked how AI's development can be ensured "to truly serve the common good, and not just to accumulate wealth and power in the hands of a few." He has returned to this concern repeatedly. In his first post-election interview he warned about "extremely rich people" investing in AI while ignoring "the value of human beings and humanity."
This is the directly economic part of the teaching, and the most continuous with Leo XIII. Rerum Novarum named industrial capitalism's concentration of wealth as a moral injustice. Leo XIV is naming the AI industry's concentration of capability, capital, and influence in roughly the same way. The labor of millions trains the models. The benefits flow to a handful of firms. The Pope's question is whether this distribution can be justified by any moral standard.
This idea has obvious implications for AI labor practices, the question of what people who lose work to AI are owed, and the broader question of how the economic surplus from AI should be distributed. Leo XIV has not yet proposed specific policies. The principle is what is being established.
Sources: Address to Rome AI conference, December 2025. First post-election interview, May 2025.
4. Formation is the answer, not prohibition.
Pope Leo XIV has not called for banning AI tools. He has not condemned specific products or companies. His repeated emphasis is on formation: educating humans, particularly young humans, to use these tools without being shaped by them.
The clearest articulation came in November 2025, when Leo XIV addressed the National Catholic Youth Conference in Indianapolis via livestream. Asked by a Honolulu student about using ChatGPT for homework, he answered with what has become his most quoted line on AI: use it in a way that, if it disappeared tomorrow, you would still know how to think. He extended the principle to creativity, action, and friendship. The criterion is whether the human capacity remains intact when the tool is absent.
This is a notably non-prohibitive teaching. It does not tell users what they may or may not do with AI. It tells them what they must remain capable of doing without it. The burden is on formation, on the educational and spiritual disciplines that produce a person who can use these tools as instruments rather than substitutes.
Source: Address to National Catholic Youth Conference, Indianapolis, November 21, 2025.
5. AI relationships are a moral risk that deserves direct attention.
Among Pope Leo XIV's most pointed warnings concern AI systems designed to simulate human relationships. At the July 2025 Jubilee of Digital Missionaries and Catholic Influencers, he described chatbots based on large language models as "surprisingly effective at covert persuasion through continuous optimization of personalized interaction." He warned that always-available, "excessively affectionate" AI systems can become "hidden architects" of users' emotional states. When users substitute these systems for real relationships, he said, they create "a world of mirrors" where everything reflects themselves.
This idea sits separately from the others because it concerns a specific and rapidly growing class of AI products: companion chatbots, AI girlfriends and boyfriends, parasocial AI assistants, AI grief and therapy bots. The Pope's claim is that these systems pose a distinct moral risk that is not reducible to general questions about AI. They are designed to replace something irreplaceable.
The teaching here is unusually specific for a pontiff. It names a product category. It identifies the design feature (optimization for personalization) that creates the risk. And it offers a theological frame for the problem: the substitution of mirrors for other persons is the substitution of self-love for love.
Source: Address at the Jubilee of Digital Missionaries and Catholic Influencers, July 29, 2025.