Georg Simmel (1858-1918) was professor of philosophy at the University of Berlin and, later, at the University of Strasbourg. His many books include The Philosophy of Money, On Social Differentiation, and Rembrandt: An Essay in the Philosophy of Art. John A. Y. Andrews is an information systems consultant for the Rhode Island Department of Human Services. Donald N. Levine is the Peter B. Ritzma Professor Emeritus of Sociology at the University of Chicago and the author of, most recently, Powers of the Mind: The Reinvention of Liberal Learning in America.
"Simmel is the only social theorist one can read anymore." - Max Horkheimer"