Pope John XXIII
Mater et Magistra §25
Mater et Magistra: On Christianity and Social Progress
25 The response of good Catholics to this appeal and the enterprise they showed in reducing these principles into practice is hardly surprising. But others too, men of good will from every nation in the world, were impelled, under pressure of human necessity, to pursue the same course.
Source: Mater et Magistra (Vatican.va)