In the family the apostolate of the laity is of unique importance for the Church. The apostolate of the social milieu is the effort to infuse a Christian spirit into the mentality, customs, laws and structures of the community in which a person lives. If the lay faithful do not discharge this apostolate, something vital would be missing in the general mission of the Church.

His Eminence, Francis Cardinal Arinze, Retired Prefect, Congregation for Divine Worship, Vatican