egoistic and consumeristic grounds. It emphasizes the need for a morally conscious economy based upon the principles of altruism, cooperation and social justice while opposing possessive individualism. Ethical socialism has been the official philosophy of mainstream socialist parties. Liberal socialism incorporates liberal principles to socialism. It has been compared to post-war social democracy for its support of a mixed economy that includes both public and private capital goods. While democratic socialism and social democracy are anti-capitalist positions insofar as criticism of capitalism is linked to the private ownership of the means of production, liberal socialism identifies artificial and legalistic monopolies to be the fault of capitalism and opposes an entirely unregulated market economy. It considers both liberty and social equality to be compatible and mutually dependent. Principles that can be described as ethical or liberal socialist have been based upon or developed by philosophers such as John Stuart Mill, Eduard Bernstein, John Dewey, Carlo Rosselli, Norberto Bobbio and Chantal Mouffe. Other important liberal socialist figures include Guido Calogero, Piero Gobetti, Leonard Trelawny Hobhouse, John Maynard Keynes and R. H. Tawney. Liberal socialism has been particularly prominent in British and Italian politics. Leninism and precedents Blanquism is a conception of revolution named for Louis Auguste Blanqui. It holds that socialist revolution should be carried out by a relatively small group of highly organised and secretive conspirators. Upon seizing power, the revolutionaries introduce socialism. Rosa Luxemburg and Eduard Bernstein criticised Lenin, stating that his conception of revolution was elitist and Blanquist. Marxism–Leninism combines Marx's scientific socialist concepts and Lenin's anti-imperialism, democratic centralism and vanguardism. Hal Draper defined socialism from above as the philosophy which employs an elite administration to run the socialist state. The other side of socialism is a more democratic socialism from below. The idea of socialism from above is much more frequently discussed in elite circles than socialism from below—even if that is the Marxist ideal—because it is more practical. Draper viewed socialism from below as being the purer, more Marxist version of socialism. According to Draper, Karl Marx and Friedrich Engels were devoutly opposed to any socialist institution that was "conducive to superstitious authoritarianism". Draper makes the argument that this division echoes the division between "reformist or revolutionary, peaceful or violent, democratic or authoritarian, etc." and further identifies six major varieties of socialism from above, among them "Philanthropism", "Elitism", "Pannism", "Communism", "Permeationism" and "Socialism-from-Outside". According to Arthur Lipow,