 In defending capitalism, neoliberals focus on defeating two foes: socialism and Keynesianism, which they typically consider as offering the most influential alternatives to their preferred institutions. Socialism, at least the form of socialism targeted by neoliberals, is an economic system where capital is socially owned, typically by government, and the capital stock is produced, organized, and its outputs distributed by the central government that is, where the economy is centrally planned. Neoliberals attack Marxist socialism in the strongest terms, but Marxists are not their sole targets. Hayek is keen to refute the twentieth century socialist Oskar Lange (1936), who adopted some aspects of neoclassical economics. Neoliberals also targeted democratic socialism; for example, Hayek (1944 [2007: 163–4]) targeted Fabian socialists in The Road to Serfdom.