There is a certain resemblance between the union of the divine persons and the fraternity that men ought to establish among themselves.
The human person needs life in society in order to develop in accordance with his nature. Certain societies, such as the family and the state, correspond more directly to the nature of man.
“The human person … is and ought to be the principle, the subject, and the object of every social organization.”1
In accordance with the principle of subsidiarity, neither the state nor any larger society should substitute itself for the initiative and responsibility of individuals and intermediary bodies.
GS 25 § 1.
Cf. CA 3, 5.