Folkways: A Study of Mores, Manners, Customs and Morals - William Graham Sumner - Google Books

http://books.google.de/books?id=DoY-tEMgJ8UC&pg=PA13

William Graham Sumner was an influential professor of sociology and politics at Yale College and president of the American Sociological Association from 1908 to 1909, and it was in this early classic textbook of sociology, first published in 1906, that he…