Before he led the Vatican, Pope Pius XI was an elite, record-breaking mountain climber.

History · Published 3 October 2026 Swipe more like this →

In short: Ambrogio Damiano Achille Ratti was not your typical cleric. Before ascending to the papacy in 1922, he spent decades as a librarian and an avid mountaineer, conquering some of the Alps' most challenging peaks. His life bridged the gap between ancient scholarly traditions and the volatile politics of the twentieth century.

Born in 1857, Ratti was a man of intense intellectual and physical discipline. A scholar of ancient manuscripts, he served as head of the Ambrosian Library in Milan, where he restored and reclassified vast collections. Yet, he was equally at home on a rope team; he famously conquered the Dufourspitze via its eastern flank in 1889, a route previously deemed unclimbable. This dual life as a librarian-athlete remained a unique feature of his identity until he was called to diplomatic service in Poland by Pope Benedict XV in 1918.

As Pope Pius XI, he navigated a world defined by the rise of totalitarian ideologies. He was the first sovereign of Vatican City following the 1929 Lateran Treaty, which finally resolved the papacy's long-standing conflict with the Italian state. His tenure was marked by a pragmatic, if firm, approach to governance. In encyclicals like Quadragesimo anno, he critiqued both unrestrained capitalism and atheistic communism, advocating instead for social solidarity and ethical economic structures. He was deeply wary of modernism, yet he actively fostered scientific inquiry by establishing the Pontifical Academy of the Sciences in 1936.

Pius XI was also a pioneer in utilizing modern technology, becoming the first pope to broadcast on radio after establishing Vatican Radio in 1931. His later years were dominated by his opposition to the encroaching influence of Adolf Hitler and Benito Mussolini. Despite his efforts to secure the Church's position through numerous concordats, he eventually condemned Nazi betrayals in his 1937 encyclical Mit brennender Sorge. He died in 1939, leaving behind a legacy that balanced traditional orthodoxy with a modern, globalized vision of the Church's role in secular society.

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