It violates right order whenever capital so employs the working or wage-earning classes as to divert business and economic activity entirely to its own arbitrary will and advantage, without any regard to the human dignity of the workers, the social character of economic life, social justice, and the common good.
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 XIQuite agreeable, of course, was this state of things to those who thought it in their abundant riches the result of inevitable economic laws and accordingly, as if it were for charity to veil the violation of justice which lawmakers not only tolerated but at times sanctioned, wanted the whole care of supporting the poor committed to charity alone.
Pope Pius XICapitalism itself is not to be condemned. And surely it is not vicious of its very nature, but it has been vitiated.
Pope Pius XIFor they have always unanimously maintained that nature, rather the Creator Himself, has given man the right of private ownership not only that individuals may be able to provide for themselves and their families but also that the goods which the Creator destined for the entire family of mankind may through this institution truly serve this purpose.
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 XIMan 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 XI