abBertrand Badie; Dirk Berg-Schlosser; Leonardo Morlino (2011). International Encyclopedia of Political Science. Sage Publications. p. 2132. ISBN978-1412959636. Private property cannot exist without a political system that defines its existence, its use, and the conditions of its exchange. That is, private property is defined and exists only because of politics.
^Garnsey, Peter (2007). Thinking about Property: From Antiquity to the Age of Revolution. Ideas in Context. Vol. 90. Cambridge University Press. p. 1. ISBN978-1139468411. Retrieved 2018-08-28. The defence of private property has been a feature of philosophical, theological and legal discourse from antiquity to the present day. [...] I begin with Plato's thoughts on property in the Republic [...].
^The Meaning and Definition of "Property" in Seventeenth-Century England, by G. E. Aylmer, 1980. Oxford University Press. Past and Present, No. 86 (Feb. 1980), pp. 87–97.
^ Compare: Bertrand Badie; Dirk Berg-Schlosser; Leonardo Morlino (2011). International Encyclopedia of Political Science. SAGE Publications, Inc. p. 2132. ISBN978-1412959636. Oliver Letwin, a British conservative theorist, observed that the private sector had to be invented. This occurred with the great European trading companies, such as the British and Dutch East India companies, founded in the 17th century. Notions of property before the Renaissance assumed that different actors had different relations to the same property.
^Thompson, Paul B (2014). "agriculture". In John, Barry (ed.). International Encyclopedia of Environmental Politics. Routledge. p. 8. ISBN978-1135554033. Retrieved 2014-08-05. [D]ebates [on enclosure] […] laid down many of the basic terms for political debate about private property, and especially property in land.