"Only his early death had prevented Frédéric Bastiat from writing a treatise on “social harmonies” — as a follow-up work on his Economic Harmonies (1850). But his follower Gustave de Molinari published a great number of monographs dealing with virtually all of the contemporary social and political problems of France, as well as with fundamental problems of social interpretation and with the sociology of religion. His writings had a decisive impact on one of the greatest champions of the new marginal-utility approach. The Italian economist Vilfredo Pareto was a disciple of Léon Walras and a great admirer of Gustave de Molinari. Right from his first systematic exposition of economic science in Cours d'Economie Politique (1896), Pareto applied Walrasian techniques of analysis to Molinarian themes. He applied marginal-utility theory and the theory of general equilibrium to explain spoliation, aristocracy and the circulation of elites, economic interests and class struggle, and the relationship between doctrines and social science."