Pope Leo XIV, whose first encyclical discusses artificial intelligence, speaks at the Basilica of Our Lady of Africa on April 13, 2026 in Algiers, Algeria. Matteo Pernaselci - Vatican Media via Vatican Pool/Getty Image

The Catholic principle guiding popes through tech upheavals, from the Industrial Revolution to AI

Pope Leo is one of many popes to respond to technological change by drawing on a Catholic principle called ‘subsidiarity.’

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