Ancient Society : Or, Researches in the Lines of Human Progress from Savagery, through Barbarism to Civilization

Ancient Society is a book by the American anthropologist Lewis H. Morgan. Building on the data about kinship and social organization presented in his 1871 "Systems of Consanguinity and Affinity of the Human Family," Morgan develops a theory of the three stages of human progress - from Savagery through Barbarism to Civilization.