On the last Sunday of each liturgical year, the Church celebrates the Solemnity of Our Lord Jesus Christ, King of the Universe. In the aftermath of World War I, Pope Pius noted that, while hostilities had ceased, true peace had not been restored to the world and the different classes of society. His first encyclical after the war was Ubi arcane Dei consillo (“On the Peace of Christ in the Kingdom of Christ”) in December 1922. He deplored class divisions and overt nationalism, and he maintained that true peace may only be found under the Kingship of Christ as the “Prince of Peace.” In 1925, the pope formally introduced and established the Feast of Christ the King in his encyclical Quas primas (“In the First”): “When we pay honor to the princely dignity of Christ, men will doubtless be reminded that the Church, founded by Christ as a perfect society, has a natural and inalienable right to perfect freedom and immunity from the power of the state; and that in fulfilling the task committed to her by God of teaching, ruling, and guiding to eternal bliss those who belong to the Kingdom of Christ, she cannot be subject to any external power.” Those words remind the faithful that while governments and philosophies come and go, Christ reigns as King forever. The Solemnity of Our Lord Jesus Christ, King of the Universe, was originally celebrated on the Sunday before All Saints but was moved in 1970 to the last Sunday of the Christian year.