Pope John XXIII
Pacem in Terris §123
Pacem in Terris: On Establishing Universal Peace in Truth, Justice, Charity, and Liberty
123 Again and again We must insist on the need for helping these peoples in a way which guarantees to them the preservation of their own freedom. They must be conscious that they are themselves playing the major role in their economic and social development; that they are themselves to shoulder the main burden of it.
Source: Pacem in Terris (Vatican.va)