Pope Paul VI
Populorum Progressio §53
Populorum Progressio: On the Development of Peoples
53 Is it not plain to everyone that such a fund would reduce the need for those other expenditures that are motivated by fear and stubborn pride? Countless millions are starving, countless families are destitute, countless men are steeped in ignorance; countless people need schools, hospitals, and homes worthy of the name. In such circumstances, we cannot tolerate public and private expenditures of a wasteful nature; we cannot but condemn lavish displays of wealth by nations or individuals; we cannot approve a debilitating arms race. It is Our solemn duty to speak out against them. If only world leaders would listen to Us, before it is too late!
Source: Populorum Progressio (Vatican.va)