68 Such an education might seem perhaps to the rulers responsible for it, a source of increased strength and vigor; it would be, in fact, the opposite, as sad experience would prove. The crime of high treason against the "King of kings and Lord of lords" (I Timothy vi. 15; cf. Apocalypse xix. 6) perpetrated by an education that is either indifferent or opposed to Christianity, the reversal of "Suffer the little children to come unto me" ( Saint Matthew xix, 14), would bear most bitter fruits. On the contrary, the State which lifts anxiety from the bleeding and torn hearts of fathers and mothers and restores their rights, only promotes its own internal peace and lays foundations of a happy future for the country. The souls of children given to their parents by God and consecrated in Baptism with the royal character of Christ, are a sacred charge over which watches the jealous love of God. The same Christ Who pronounced the words "Suffer little children to come unto me" has threatened, for all His mercy and goodness, with fearful evils, those who give scandal to those so dear to His heart.
Source: Summi Pontificatus (Vatican.va)