Such free obedience consists in the children doing voluntarily what the parents command, without any use of compulsory means or fear of the same, and voluntarily abstaining from what the parents prohibit, because they have prohibited it or commanded it; for if the children themselves are so convinced of the goodness and purposiveness of what is commanded of them, and if they are so convinced of this that their own inclination already drives them to do what is commanded of them by their parents, then this is a case not of obedience but of insight.