While socialists have been hostile to liberalism, accused of "providing an ideological cover for the depredation of capitalism", it has been pointed out that "the goals of liberalism are not so different from those of the socialists", although this similarly in goals has been described as being deceptive due to the different meanings liberalism and socialism give to liberty, equality and solidarity. Liberal economists such as Léon Walras considered themselves socialists and Georgism has also been considered by some as a form of socialism. The idea that liberals or left-libertarians and state socialists disagree about means rather than ends has been similarly argued by Gustave de Molinari and Herbert Spencer. According to Roderick T. Long, Molinari was the first theorist of free-market left-libertarianism. Molinari has also influenced left-libertarian and socialists such as Benjamin Tucker and the "Liberty" circle. Philosophical anarchist William Godwin, classical economists such as Adam Smith, David Ricardo, Thomas Robert Malthus, Nassau William Senior, Robert Torrens and the Mills, the early writings of Herbert Spencer, socialists such as Thomas Hodgskin and Pierre-Joseph Proudhon, social reformer Henry George and the Ricardian/Smithian socialists, among others, "provided the basis for the further development of the left libertarian perspective."