No one can be at the same time a sincere Catholic and a true socialist, said Pius XI. In the Netherlands the Catholic Archbishopric warned Catholics for socialism as well.

The socialists wrongly assume the right of property to be of mere human invention . . . and, preaching up the community of goods, declare that … all may with impunity seize upon the possessions and usurp the rights of the wealthy. More wise and profitably, the Church recognizes the…