It was not a Senate subcommittee or a Brussels working group that filed the week’s most striking AI policy statement. It was Rome.
Pope Leo XIV released his first encyclical on Monday, a document titled Magnifica Humanitas — roughly, “The Magnificence of Humanity” — and devoted a significant portion of its text to the dangers posed by artificial intelligence. The message to the world’s policymakers was direct: slow down.
Encyclicals are the Vatican’s heaviest-calibre communications, letters addressed formally to Catholic bishops but understood to carry the pope’s broadest public teaching. Leo used that platform to argue that AI development is outpacing the institutions meant to govern it, and that governments need to build “adequate regulatory tools” before the technology reshapes society in ways that cannot easily be undone.
The intervention lands at a moment when global AI governance is genuinely unsettled. The European Union’s AI Act is in early implementation, the United States has no equivalent federal framework in place, and the pace of model releases from the major labs has not slackened. Into that gap steps an institution with roughly 1.4 billion members worldwide and a tradition of making long-horizon arguments that governments sometimes take decades to catch up to.
The Vatican has engaged with technology ethics before — Leo’s predecessor Francis convened discussions with tech executives and signed the Rome Call for AI Ethics in 2020 — but an encyclical is a step beyond a conference communiqué. Whether Magnifica Humanitas shifts any regulatory timeline in Washington, Brussels, or Beijing remains to be seen. The document is now in the public record either way.