Pope Pius XI
Quadragesimo Anno §6
Quadragesimo Anno: On Reconstruction of the Social Order
6 Those men were without question sincerely seeking an immediate remedy for this lamentable disorganization of States and a secure safeguard against worse dangers. Yet such is the weakness of even the best of human minds that, now rejected as dangerous innovators, now hindered in the good work by their very associates advocating other courses of action, and, uncertain in the face of various opinions, they were at a loss which way to turn.
Source: Quadragesimo Anno (Vatican.va)