Pope Pius XI

Pope Pius XI (Latin: Pius PP. XI; Italian: Pio XI; May 31, 1857 –  February 10, 1939), born Ambrogio Damiano Achille Ratti, reigned as Pope from February 6, 1922 and as sovereign of Vatican City from 1929 until his death on February 10, 1939. He issued the encyclical Quas Primas establishing the feast of Christ the King, and took as his papal motto "Christ's peace in Christ's kingdom." This indicates the central idea of his pontificate: that the Catholic religion must permeate all areas of human living: the home, the city, politics, economics, art etc. Rather than allowing religious belief to be reduced to a merely private matter, or withdrawing the Church from involvement in the outer world, Pius XI thought Catholics must work to create a truly Catholic society: Christ must be King over every aspect of life.
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