Pacem in Terris §53

⁵³ Men, both as individuals and as intermediate groups, are required to make their own specific contributions to the general welfare. The main consequence of this is that they must harmonize their own interests with the needs of others, and offer their goods and services as their rulers shall direct—assuming, of course, that justice is maintained and the authorities are acting within the limits of their competence. Those who have authority in the State must exercise that authority in a way which is not only morally irreproachable, but also best calculated to ensure or promote the State's welfare.