3 As to what We have called the goods of the soul, which consist chiefly in the practice of the true religion and in the unswerving observance of the Christian precepts, We see them daily losing esteem among men, either by reason of forgetfulness or disregard, in such wise that all that is gained for the well-being of the body seems to be lost for that of the soul. A striking proof of the lessening and weakening of the Christian faith is seen in the insults too often done to the Catholic Church, openly and publicly - insults, indeed, which an age cherishing religion would not have tolerated. For these reasons, an incredible multitude of men is in danger of not achieving salvation; and even nations and empires themselves cannot long remain unharmed, since, when Christian institutions and morality decline, the main foundation of human society goes together with them. Force alone will remain to preserve public tranquillity and order. But force is very feeble when the bulwark of religion has been removed, and, being more apt to beget slavery than obedience, it bears within itself the germs of ever-increasing troubles. The present century has encountered memorable disasters, and it is not certain that some equally terrible are not impending. The very times in which we live are warning us to seek remedies there where alone they are to be found-namely, by re-establishing in the family circle and throughout the whole range of society the doctrines and practices of the Christian religion. In this lies the sole means of freeing us from the ills now weighing us down, of forestalling the dangers now threatening the world. For the accomplishment of this end, venerable brethren, We must bring to bear all the activity and diligence that lie within Our power. Although we have already, under other circumstances, and whenever occasion required, treated of these matters, We deem it expedient in this letter to define more in detail the duties of the Catholics, inasmuch as these would, if strictly observed, wonderfully contribute to the good of the commonwealth. We have fallen upon times when a violent and well-nigh daily battle is being fought about matters of highest moment, a battle in which it is hard not to be sometimes deceived, not to go astray and, for many, not to lose heart. It behooves us, venerable brethren, to warn, instruct, and exhort each of the faithful with an earnestness befitting the occasion: that none may abandon the way of truth.(1)
Source: Sapientiae Christianae (Vatican.va)