This is also how it happens in domestic matters, in marriage and in the rearing of children. You think about marrying a wife, one who is well-mannered, chaste, pleasant, a good mother. But it can happen that you get a wife whose manner is completely different, one who is very bad, or who, even though she may be truly good, still leaves much to be desired for you. You think about how to rear your sons to be decent and useful to the state. But behold, contrary to your expectation they become criminals or scoundrels of some other kind, useless burdens on the earth. Is that a reason to desert my home and my domestic responsibilities, because I see that nothing succeeds for all my diligence and that nothing responds to my labors? No. What, then? One must rule his household, found a family, educate his children, and rule his wife, but in such a way that it happens without your measure and rule, that you do not trust in your own wisdom. If your son is suited for learning the liberal arts, let him learn them; if he is suited for a craft, let him learn that. The important thing is that you do not exceed your own limits, but commit the entire outcome and success to God. (Luther’s Works, v.15 p.35)