Pope Pius XI
Quadragesimo Anno §54
Quadragesimo Anno: On Reconstruction of the Social Order
54 Property, that is, "capital," has undoubtedly long been able to appropriate too much to itself. Whatever was produced, whatever returns accrued, capital claimed for itself, hardly leaving to the worker enough to restore and renew his strength. For the doctrine was preached that all accumulation of capital falls by an absolutely insuperable economic law to the rich, and that by the same law the workers are given over and bound to perpetual want, to the scantiest of livelihoods. It is true, indeed, that things have not always and everywhere corresponded with this sort of teaching of the so-called Manchesterian Liberals; yet it cannot be denied that economic social institutions have moved steadily in that direction. That these false ideas, these erroneous suppositions, have been vigorously assailed, and not by those alone who through them were being deprived of their innate right to obtain better conditions, will surprise no one.
Source: Quadragesimo Anno (Vatican.va)