The balance of private good and general welfare is at the bottom of civilized morals but the morals of the Heroic Age are founded on individuality and on nothing else.
When it comes to raising civilized kids there are no hard rules but there are two things on which most parents agree: Boys are generally wilder than girls and adolescents are wilder than kids of any other age. If you've got an adolescent boy you're in the sweet spot for trouble.