Man fulfills himself by using his intelligence and freedom. In so doing he utilizes the things of this world as objects and instruments and makes them his own. The foundation of the right to private initiative and ownership is to be found in this activity. By means of his work man commits himself, not only for his own sake but also "for others" and "with others." Each person collaborates in the work of others and for their good. Man works in order to provide for the needs of his family, his community, his nation, and ultimately all humanity.