No culture has ever exceeded Western civilization in power and extent. Our society now covers more than half of the globe, extending in space from Poland to the east of Australia i n the west. In the course of this expansion, most of it during the last five centuries, the power of Western civilization has been so great that it has destroyed, almost without thinking of it, hundreds of other societies, including five or six other civilizations.

Chapter 10, Western Civilization, p. 334 - The Evolution of Civilizations (1961) (Second Edition 1979)