 The period between the wars also saw an imposing series of books articulating and developing his philosophical beliefs. This includes Reconstruction in Philosophy (1920), Human Nature and Conduct (1922), Experience and Nature (1925), The Quest for Certainty (1929), Art as Experience (1934), A Common Faith (1934), Logic: The Theory of Inquiry (1938), and Theory of Valuation (1939).  The Public and Its Problems (1927) contained a defence of participatory democratic ideals against sceptics such as Walter Lippmann, who argued that there was only space for a minimally democratic politics in complex modern societies. Dewey was a critic of laissez-faire liberalism and its accompanying individualistic view of society from his early writings. This criticism was amplified during the Depression, where he expressed a form of liberal and democratic socialism in writings such as Individualism, Old and New (1930), Liberalism and Social Action (1935), and Freedom and Culture (1939). 