CSDC 165

A society that wishes and intends to remain at the service of the human being at every level is a society that has the common good — the good of all people and of the whole person ³⁴⁷ Cf. Catechism of the Catholic Church, 1912. — as its primary goal. The human person cannot find fulfilment in himself, that is, apart from the fact that he exists “with” others and “for” others. This truth does not simply require that he live with others at various levels of social life, but that he seek unceasingly — in actual practice and not merely at the level of ideas — the good, that is, the meaning and truth, found in existing forms of social life. No expression of social life — from the family to intermediate social groups, associations, enterprises of an economic nature, cities, regions, States, up to the community of peoples and nations — can escape the issue of its own common good, in that this is a constitutive element of its significance and the authentic reason for its very existence³⁴⁸ Cf. John XXIII, Encyclical Letter Pacem in Terris: AAS 55AAS — Acta Apostolicae Sedis (official gazette of the Holy See)Volume 55 (1963) at vatican.va — scanned PDF (1963), 272..