12 All know with what salutary effect and in how many ways the influence of religion penetrates society. It is beyond dispute that sound public and private morality gives honour and strength to States. But it is equally certain that, without religion there is no true morality, either public or private. - From the family, solidly based on its natural foundations, comes the life, the growth, and the energy of society. But without religion, and without morality, the domestic partnership has no stability, and the family bonds grow weak and waste away. - The prosperity of peoples and of nations comes from God and from His blessings. If a people does not attribute its prosperity to Him, but rises up against Him, and in the pride of its heart tacitly tells Him that it has no need of Him, its prosperity is but a semblance, certain to disappear so soon as it shall please the Lord to confound the proud insolence of His enemies. - It is religion which, penetrating to the depth of each one's conscience, makes him feel the force of duty and urges him to fulfil it. It is religion which gives to rulers feelings of justice and love towards their subjects; which makes subjects faithful and sincerely devoted to their rulers; which makes upright and good legislators, just and incorruptible magistrates, brave and heroic soldiers, conscientious and diligent administrators. It is religion which produces concord and affection between husband and wife, love and reverence between parents and their children; which makes the poor respect the property of others, and causes the rich to make a right use of their wealth. From this fidelity to duty, and this respect for the rights of others come the order, the tranquillity, and the peace, which form so large a part of the prosperity of a people and of a State. Take away religion, and with it all these immensely precious benefits would disappear from society.
Source: Dall'alto dell'Apostolico Seggio (Vatican.va)