38 A marvelous vision, which makes us see the human race in the unity of one common origin in God "one God and Father of all, Who is above all, and through all, and in us all" ( Ephesians iv. 6); in the unity of nature which in every man is equally composed of material body and spiritual, immortal soul; in the unity of the immediate end and mission in the world; in the unity of dwelling place, the earth, of whose resources all men can by natural right avail themselves, to sustain and develop life; in the unity of the supernatural end, God Himself, to Whom all should tend; in the unity of means to secure that end.
Source: Summi Pontificatus (Vatican.va)