Thomas Aquinas

“ On the other hand, the fact that a man has perfection of science and virtue does not give him the character of a principle in relation to others, but merely a certain excellence in himself. Wherefore a special virtue is appointed for the payment of worship and honor to persons in positions of dignity. Yet, forasmuch as science, virtue and all like things render a man fit for positions of dignity, the respect which is paid to anyone on account of any excellence whatever belongs to the same virtue. ”

“ It seems that observance is a greater virtue than piety. For the prince to whom worship is paid by observance is compared to a father who is worshiped by piety, as a universal to a particular governor; because the household which a father governs is part of the state which is governed by the prince. Now a universal power is greater, and inferiors are more subject thereto. Therefore observance is a greater virtue than piety. ”

“ Now it is evident that the persons of our parents and of our kindred are more substantially akin to us than persons in positions of dignity, since birth and education, which originate in the father, belong more to one's substance than external government, the principle of which is seated in those who are in positions of dignity. For this reason piety takes precedence of observance, inasmuch as it pays worship to persons more akin to us, and to whom we are more strictly bound. ”