“Catch them young and hold them tight” is the world wide motto of the Catholic Church.

The Catholic Answers

That is simple prudence, and even God does not dispense from common sense. He Himself says that it is good for a man to have borne the yoke from his youth. The yoke of obedience and of virtue restraining children from ignorance and vice is good for them. And what utter folly it would be to begin to teach children the right thing only after they had learned the wrong thing; or do you think it right to speak of virtue only to people who have already contracted vice? The policy of catching children young for God and holding them tight for Him is the only sane policy. Is God the God only of adults, or is He the God of little children also, with a right to their love and gentle service? Would you teach the child anything? Or nothing? Or just to hate God rather than to love Him? I know which child would be the better off, were one trained on such theories as yours, and the other trained by the Catholic Church.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty