Guido De Ruggiero also identified differences between "Montesquieu and Rousseau, the English and the democratic types of liberalism" and argued that there was a "profound contrast between the two Liberal systems". He claimed that the spirit of "authentic English Liberalism" had "built up its work piece by piece without ever destroying what had once been built, but basing upon it every new departure". This liberalism had "insensibly adapted ancient institutions to modern needs" and "instinctively recoiled from all abstract proclamations of principles and rights". Ruggiero claimed that this liberalism was challenged by what he called the "new Liberalism of France" that was characterised by egalitarianism and a "rationalistic consciousness".