Pope · Modern
Pope Pius XI
1857–1939 · Social kingship of Christ; social doctrine; Catholic Action
Pope 1922–1939.
Achille Ratti, librarian, alpinist and nuncio to Poland, who proclaimed the feast of Christ the King (Quas Primas, 1925), articulated subsidiarity in Quadragesimo Anno (1931), condemned Nazism in Mit Brennender Sorge and communism in Divini Redemptoris (both 1937), defended Christian marriage in Casti Connubii, promoted Catholic Action and the Eastern Churches, and signed the Lateran Treaty.
Why he matters: Gave the Church her fullest statement of Christ's social kingship and her mature social doctrine, and stood against both totalitarianisms of the century.
Reading
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Quas PrimasPope Pius XI, 1925 · Christ the King of nations.
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Quadragesimo AnnoPope Pius XI, 1931 · Subsidiarity and the reconstruction of the social order.
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Mit Brennender Sorge and Divini RedemptorisPope Pius XI, 1937 · Against National Socialism and atheistic communism.
Documented positions
Where this thinker stands on each dispute the test covers.