For teaching the people to be affectionate and loving, there is nothing better than filial piety. For teaching them (the observance of) propriety and submissiveness, there is nothing better than fraternal duty. For changing their manners and altering their customs, there is nothing better than music. For securing the repose of superiors and the good order of the people, there is nothing better than the rules of propriety.

(The Doctrine of Filial Piety)