7 Those who are at the head of the government and whose cooperation is so necessary to heal the wounds of the Church easily understand that, just as Portugal attained great glory from the strength and blessings of the Catholic religion, so too the Church provides the only speedy elimination of the causes of evil. The state must always be governed under the leadership and guidance of this same religion. If this is done wisely, then the government will conform to the genius, the character, and the will of the people. For the Catholic faith is the legitimate religion of Portugal. Therefore it is entirely fitting that it be defended by the protection of the law and the authority of the state officials, and that its safety, continuance, and honor be publicly assured. Let its freedom and action legitimately lie in the political as well as ecclesiastical power. All should be convinced of what daily experience confirms, that far from opposing the civil power by invidious rivalry, the Church aids the safety of the citizens and public tranquillity.
Source: Pergrata (Vatican.va)