Man cannot be exempted from his divinely-imposed obligations toward civil society, and the representatives of authority have the right to coerce him when he refuses without reason to do his duty. Society, on the other hand, cannot defraud man of his God-granted right... Nor can society systematically void these rights by making their use impossible.
Pope Pius XIWhether considered as a doctrine, or as an historical fact, or as a movemement, socialism, if it really remains socialism, cannotbe brought into harmony with the dogmas of the Catholic church.... Religious socialism, Christian socialism, are expressions implying a contradiction in terms.
Pope Pius XIWe lament, too, the destruction of purity among women and young girls as is evidenced by the increasing immodesty of their dress and conversation and by their participation in shameful dances.
Pope Pius XITherefore the dignity of the human person normally demands the right to the use of earthly goods as the natural foundation for a livelihood; and to that right corresponds the fundamental obligation to grant private property, as far as possible, to all.
Pope Pius XIIt will be impossible to put these principles into practice unless the non-owning workers through industry and thrift advance to the state of possessing some little property.
Pope Pius XI"Religious Socialism," "Christian Socialism," are expressions implying a contradiction in terms.
Pope Pius XIMen will see in their king or in their rulers men like themselves perhaps unworthy or open to criticism, but they will not on that account refuse obedience if they see reflected in them the authority of Christ, God and Man. Peace and harmony, too, will result; for with the spread and the universal extension of the kingdom of Christ, men will become more and more conscious of the link that binds them together, and thus many conflicts will either be prevented entirely or at least their bitterness be diminished.
Pope Pius XI