moral imperative

Noun

 * 1)  A practice, policy, or state of affairs which is required and justified by the fact that it is morally right.
 * 2)  An ethical principle or rule which requires and justifies a practice, policy, or state of affairs.
 * 3) * 1996, Robert Strom et al., "Intergenerational Relationships in Taiwanese Families" in Changing Family Roles and Feminism, Man Singh Das (ed.), ISBN 9788185880921, p. 48 (Google preview):
 * . . . the Confucian custom of filial piety. This moral imperative requires sons to obey their parents and take care of them during old age.
 * 1)  An ethical principle or rule which requires and justifies a practice, policy, or state of affairs.
 * 2) * 1996, Robert Strom et al., "Intergenerational Relationships in Taiwanese Families" in Changing Family Roles and Feminism, Man Singh Das (ed.), ISBN 9788185880921, p. 48 (Google preview):
 * . . . the Confucian custom of filial piety. This moral imperative requires sons to obey their parents and take care of them during old age.