Christ's commandment to hear the Church . . . is binding on all men, in every period, and every country.
Pope Pius XIAlways moved by religious motives, the Church has condemned the various forms of Marxist Socialism; and she condemns them today, because it is her permanent right and duty to safeguard men from currents of thought and influence that jeopardize their eternal salvation.
Pope Pius XIIf Socialism, like all errors, contains some truth (which, moreover, the Supreme Pontiffs have never denied), it is based nevertheless on a theory of human society peculiar to itself and irreconcilable with true Christianity. Religious socialism, Christian socialism, are contradictory terms; no one can be at the same time a good Catholic and a true socialist.
Pope Pius XIThis organic conception of society, the only vital conception, combines a noble humanism with the genuine Christian spirit, and it bears the inscription from Holy Writ which St. Thomas has explained: "The work of justice shall be peace"; a text applicable to the life of a people whether it be considered in itself or in its relations with other nations.
Pope Pius XIWhen once men recognize, both in private and in public life, that Christ is King, society will at last receive the great blessings of real liberty, well-ordered discipline, peace and harmony.
Pope Pius XIAmong the various supplications with which we successfully appeal to the Virgin Mother of God, the Holy Rosary without doubt occupies a special and distinct place. This prayer, which some call the Psalter of the Virgin or Breviary of the Gospel and of Christian life, was described and recommended by Our Predecessor of happy memory, Leo XIII
Pope Pius XI