Socialism: Utopian and Scientific (Paperback) (ISBN-13: 9782491182236)

"The materialist conception of history starts from the principle that production and, next to production, the exchange of things produced, is the basis of every social order; that in every society that has appeared in history, the distribution of wealth and with it the division of society into classes or estates are dependent upon what is produced, how it is produced, and how the products are exchanged." ― Friedrich Engels