Here is Hans Hoppe´s first treatise in English, and the one that put him on the map as a social thinker and economist to watch. He argued that there are only two possible archetypes in economic affairs: socialism and capitalism. All systems are combinations of those two types. The capitalist model he defines as pure protection of private property, free association, and exchange - no exceptions. All deviations from that ideal are species of socialism, with public ownership and interference with trade. The theoretical apparatus is Rothbardian to the core, and its main contribution is to provide an organizing principle for understanding the structure of real-world economies as measured against pure types.