"Principles of political economy considered with a view to their practical application". Book by Thomas Malthus, Book II, Chapter I, "On The Progress of Wealth", Section X, p. 414, 1836.
"The Structural Transformation of the Public Sphere: An Inquiry into a Category of Bourgeois Society (Studies in Contemporary German Social Thought)". Book by Jurgen Habermas translated by Thomas Burger and Frederick Lawrence, 1989.