Again, every human being has the right to freedom of movement and of residence within the confines of his own State. When there are just reasons in favor of it, he must be permitted to emigrate to other countries and take up residence there.22Cf. Pius XII's broadcast message, Christmas 1952, AAS 45 (1953) 36-46. The fact that he is a citizen of a particular State does not deprive him of membership in the human family, nor of citizenship in that universal society, the common, world-wide fellowship of men.
Finally, man's personal dignity involves his right to take an active part in public life, and to make his own contribution to the common welfare of his fellow citizens. As Pope Pius XII said, "man as such, far from being an object or, as it were, an inert element in society, is rather its subject, its basis and its purpose; and so must he be esteemed."23Cf. Pius XII's broadcast message, Christmas 1944, AAS 37 (1945) 12.