We are forced to agree with those who hold that the chief cause of the present indifference and, as it were, infirmity of soul, and the serious evils that result from it, is to be found above all in ignorance of things divine…"
“…there are large numbers of Christians in our own time who are entirely ignorant of those truths necessary for salvation. And when we mention Christians, We refer not only to the masses or to those in the lower walks of life - for these find some excuse for their ignorance in the fact that the demands of their harsh employers hardly leave them time to take care of themselves or of their dear ones - but We refer to those especially who do not lack culture or talents and, indeed, are possessed of abundant knowledge regarding things of the world but live rashly and imprudently with regard to religion. It is hard to find words to describe how profound is the darkness in which they are engulfed and, what is most deplorable of all, how tranquilly they repose there…”
“…We by no means wish to conclude that a perverse will and unbridled conduct may not be joined with a knowledge of religion. Would to God that facts did not too abundantly prove the contrary! But We do maintain that the will cannot be upright nor the conduct good when the mind is shrouded in the darkness of crass ignorance. A man who walks with open eyes may, indeed, turn aside from the right path, but a blind man is in much more imminent danger of wandering away. Furthermore, there is always some hope for a reform of perverse conduct so long as the light of faith is not entirely extinguished; but if lack of faith is added to depraved morality because of ignorance, the evil hardly admits of remedy, and the road to ruin lies open…”
"…if faith languishes in our days, if among large numbers it has almost vanished, ***the reason is that the duty of catechetical teaching is either fulfilled very superficially or altogether neglected… ***Man has the faculty of understanding at his birth, but he also has need of his mother’s word to awaken it, as it were, and to make it active. So too, the Christian, born again of water and the Holy Spirit, has faith within him, but he requires the word of the teaching Church to nourish and develop it and to make it bear fruit…"
“…Since it is a fact that*** in these days adults need instruction no less than the young, all pastors and those having the care of souls shall explain the Catechism to the people in a plain and simple style adapted to the intelligence of their hearers***…”
“…of [the Apostles] Pope Saint Gregory wrote: “They took supreme care to preach to the uninstructed simple truths easy to understand, not things deep and difficult” [Morals, I, 17, cap. 26]. In matters of religion, the majority of men in our times must be considered uninstructed…”