Pope John XXIII
Mater et Magistra §158
Mater et Magistra: On Christianity and Social Progress
158 Mindful of Our position as the father of all peoples, We feel constrained to repeat here what We said on another occasion: "We are all equally responsible for the undernourished peoples.(40) [Hence], it is necessary to educate one's conscience to the sense of responsibility which weighs upon each and every one, especially upon those who are more blessed with this world's goods." (41)
Source: Mater et Magistra (Vatican.va)