De Decalogo

And the fifth commandment, that about the honour due to parents, conceals under its brief expression, many very important and necessary laws, some enacted as applicable to old and young men, some as bearing on the relations existing between rulers and subjects, others concerning benefactors and those who have received benefits, others affecting slaves and masters;

for parents belong to the superior class of all these divisions just mentioned, the class, I mean, of elders, of rulers, of benefactors, and of masters; and children are in the inferior class, in which are ranked the younger people, the subjects, those who have received benefits, and slaves.