From Pope St. John Paul II’s Apostolic Exhortation Familiaris Consortio (1981):
To the injustice originating from sin—which has profoundly penetrated the structures of today’s world—and often hindering the family’s full realization of itself and of its fundamental rights, we must all set ourselves in opposition through a conversion of mind and heart, following Christ Crucified by denying our own selfishness: such a conversion cannot fail to have a beneficial and renewing influence even on the structures of society.
What is needed is a continuous, permanent conversion which, while requiring an interior detachment from every evil and an adherence to good in its fullness, is brought about concretely in steps which lead us ever forward. Thus a dynamic process develops, one which advances gradually with the progressive integration of the gifts of God and the demands of His definitive and absolute love in the entire personal and social life of man. Therefore an educational growth process is necessary, in order that individual believers, families and peoples, even civilization itself, by beginning from what they have already received of the mystery of Christ, may patiently be led forward, arriving at a richer understanding and a fuller integration of this mystery in their lives.
— Familiaris Consortio 9