Pope John XXIII
Mater et Magistra §161
Mater et Magistra: On Christianity and Social Progress
161 Justice and humanity demand that those countries which produce consumer goods, especially farm products, in excess of their own needs should come to the assistance of those other countries where large sections of the population are suffering from want and hunger. It is nothing less than an outrage to justice and humanity to destroy or to squander goods that other people need for their very lives.
Source: Mater et Magistra (Vatican.va)