Franz Oppenheimer

"What, then, is the State as a sociological concept? The State, completely in its genesis, essentially and almost completely during the first stages of its existence, is a social institution, forced by a victorious group of men on a defeated group, with the sole purpose of regulating the dominion of the victorious group over the vanquished, and securing itself against revolt from within and attacks from abroad. Teleologically, this dominion had no other purpose than the economic exploitation of the vanquished by the victors.

No primitive state known to history originated in any other manner."

Franz Oppenheimer (March 30, 1864 – September 30, 1943).  Born in Berlin, the son of a reform rabbi.  He studied medicine at the University of Berlin. However, he shifted his focus to economics and sociology, and in 1895, he earned his doctorate in political economy from the University of Kiel. He then pursued an academic career and eventually became a professor of sociology at the University of Frankfurt.  Oppenheimer was appointed to the first-ever German academic chair of sociology at the prestigious University of Frankfurt.