Magnifica Humanitas §48

⁴⁸ The Church’s Social Doctrine brings us to the very heart of our faith: the mystery of the living God, revealed in Jesus Christ, who, as a communion of Persons — Father, Son and Holy Spirit — is love itself in relationship, expressed in the mutual gift of self and in sharing with the world. As the Council recalled, human persons are called to communion with God and “can fully discover their true selves only in sincere self-giving.” Indeed their deepest vocation is to enter into the Trinitarian dynamic of love received and shared.