17 To organize teaching in such a way as to remove it from all contact with religion is therefore to corrupt the very seeds of beauty and honor in the soul. It is to prepare, not defenders of the nation, but a plague and a scourge for the human race. Once God is suppressed, what can keep young people dutiful or recall them when they have strayed from the path of virtue and fall into the abyss of vice?
Source: Militantis Ecclesiae (Vatican.va)