“The Synod (of Vatican II) further declares that the right to religious freedom has its foundation in the very dignity of the human person, as this dignity is known through the revealed Word of God and by reason itself. This right of the human person to religious freedom is to be recognized in the constitutional law whereby society is governed. Thus it is to become a civil right. …… Therefore, the right to religious freedom has its foundation, not in the subjective disposition of the person, but in his very nature.” 

Pope Gregory XVI called Religious Liberty “insanity.”  Salvation is only within the Catholic Church and in no other religion.