Key Takeaways
- Father Brendan McGuire, a former Silicon Valley technology executive turned priest, serves as a moral bridge between the tech industry and the Catholic Church.
- He was consulted by Anthropic to help shape an ethical framework for its AI chatbot Claude and co‑founded the Institute for Technology, Ethics and Culture (ITEC) with Santa Clara University and the Vatican.
- In reaction to Pope Leo XIV’s encyclical Magnifica Humanitas, McGuire emphasizes the urgent need for a “disarmament of the algorithms” to slow the competitive AI race.
- He argues that AI ethics is a shared responsibility—not limited to technologists—but extending to governments, regulators, everyday users, and even non‑users who will be affected by the technology.
- Transparency is presented as the prerequisite for accountability and trustworthy AI; without it, meaningful regulation is impossible.
- McGuire avoids both techno‑utopian and techno‑apocalyptic extremes, insisting that good intentions must be paired with concrete ethical dialogue and action.
- He warns that the window to shape AI responsibly is open now but may close if humanity remains passive.
Background and Dual Identity
Father Brendan McGuire, 60, holds engineering and computer science degrees from Trinity College Dublin and completed Stanford’s executive business program before spending years as a technology executive in Silicon Valley. He left that world 26 years ago to be ordained a priest of the Diocese of San José, yet he insists his heart never left the industry. “I came from the industry,” he told OSV News. “My heart’s never left it, but my heart is really with the Lord.” This dual formation equips him to act as a liaison between faith and technology, a role he describes as his lifelong calling: “I’ve always felt my role was to bridge those two worlds together.”
Advising Anthropic and Founding ITEC
Earlier this year, McGuire was among the faith leaders invited by Anthropic, the creators of the chatbot Claude, to advise on an ethical framework governing how the AI handles complex moral questions. His involvement reflects a growing trend of religious voices entering AI governance discussions. In 2019 he co‑founded the Institute for Technology, Ethics and Culture (ITEC), a formal partnership between Santa Clara University’s Markkula Center for Applied Ethics and the Vatican’s Dicastery for Culture and Education. ITEC brings together business leaders, academics, and faith figures to confront the moral challenges posed by artificial intelligence, embodying the bridge he seeks to build.
Response to Pope Leo XIV’s Encyclical
Speaking at the Vatican after the May 25 promulgation of Pope Leo XIV’s encyclical Magnifica Humanitas: On Safeguarding the Human Person in the Time of Artificial Intelligence, McGuire underscored the encyclical’s urgency. “What I’m most worried about is us as humanity not taking this moment seriously,” he said. “If we stay silent and just be passive, then this could go very wrong for us.” He was particularly struck by the pope’s call for a “disarmament of the algorithms,” likening it to the need to curb a dangerous arms race. “There’s an algorithmic race on,” McGuire explained. “And to disarm that would mean that we need to be thoughtful about that… It can be dangerous, just like the nuclear arms race is dangerous. And I thought that was really powerful.”
AI Ethics as a Collective Responsibility
McGuire stressed that the pope’s challenge is not confined to technologists or investors. “This isn’t just about technical people in Silicon Valley or investors or business people making a decision,” he asserted. “This is for all of us to play a role and to be involved at all different levels.” He argued that governments, regulatory bodies, ordinary users, and even those who never touch a smartphone have a stake in AI’s development because they will be affected by its outcomes. “Even the non-user needs to use his voice. Why? Because they’re going to be affected by this.”
The Limits of Market‑Driven Ethics
Acknowledging the massive financial currents propelling AI—trillions of dollars in investment—McGuire warned that leaving ethics to market forces alone is insufficient. “Capitalism needs human guidance. And this is the human guidance the pope is asking for,” he told journalists after Anthropic co‑founder Chris Olah spoke at the Vatican press conference. He contended that without deliberate ethical oversight, profit motives could steer AI toward harmful ends, making external moral frameworks indispensable.
Transparency as the Path to Accountability
On the question of industry self‑regulation, McGuire was skeptical. “Transparency leads to accountability, and accountability leads to trust. And with trust we’ll have responsible AI. But we can’t get there without transparency,” he said. He argued that without insight into how algorithms are developed and what they do, effective regulation is impossible. “If we don’t know how these things are being developed and what they’re doing, then how could we regulate them? We can’t.” This stance places openness at the core of any trustworthy AI ecosystem.
Avoiding Extremes and Fostering Dialogue
McGuire resists both techno‑utopian visions that herald AI as humanity’s savior and techno‑apocalyptic fears that predict its destruction. “There are those who … think it’s going to destroy humanity. And then there are those on the other end who think it’s going to be the great savior of humanity,” he observed. He positions himself between these extremes, acknowledging that many AI professionals act in good faith. “I have seen men and women — and not just at Anthropic, of other AI companies — of genuine goodwill who are trying to do the right thing,” he said. Yet he insists that good intentions alone are insufficient; they must be met with structured dialogue and concrete ethical standards.
The Urgency of Acting Now
The priest warned that the opportunity to shape AI responsibly is fleeting. “It’s in the moment right now where it is still malleable. It is still changing. You can make changes to this. And if we can get in now to make changes for the good, then we will all benefit the whole of humanity,” he proclaimed. “Now is the moment.” His message is a call to action for faith leaders, technologists, policymakers, and citizens alike to engage actively before the technology’s trajectory becomes entrenched.
Conclusion
Father Brendan McGuire’s journey from Silicon Valley boardrooms to the Vatican press room epitomizes the need for moral voices in the AI conversation. Through his work with Anthropic, ITEC, and his eloquent response to Pope Leo XIV’s encyclical, he advocates for a measured, transparent, and collectively responsible approach to artificial intelligence—one that seeks to safeguard human flourishing amid rapid technological change. As he reminds us, the window to influence AI’s path is open today, but it will not remain ajar indefinitely.
Meet the Silicon Valley priest advising tech companies on artificial intelligence ethics

