in constructing socialism and within an established socialist economy. In the 19th century, the philosophy of state socialism was first explicitly expounded by the German political philosopher Ferdinand Lassalle. In contrast to Karl Marx's perspective of the state, Lassalle rejected the concept of the state as a class-based power structure whose main function was to preserve existing class structures. Lassalle also rejected the Marxist view that the state was destined to "wither away". Lassalle considered the state to be an entity independent of class allegiances and an instrument of justice that would therefore be essential for achieving socialism. Preceding the Bolshevik-led revolution in Russia, many socialists including reformists, orthodox Marxist currents such as council communism, anarchists and libertarian socialists criticised the idea of using the state to conduct central planning and own the means of production as a way to establish socialism. Following the victory of Leninism in Russia, the idea of "state socialism" spread rapidly throughout the socialist movement and eventually state socialism came to be identified with the Soviet economic model. Joseph Schumpeter rejected the association of socialism and social ownership with state ownership over the means of production because the state as it exists in its current form is a product of capitalist society and cannot be transplanted to a different institutional framework. Schumpeter argued that there would be different institutions within socialism than those that exist within modern capitalism, just as feudalism had its own distinct and unique institutional forms. The state, along with concepts like property and taxation, were concepts exclusive to commercial society (capitalism) and attempting to place them within the context of a future socialist society would amount to a distortion of these concepts by using them out of context. Utopian versus scientific Utopian socialism is a term used to define the first currents of modern socialist thought as exemplified by the work of Henri de Saint-Simon, Charles Fourier and Robert Owen which inspired Karl Marx and other early socialists. Visions of imaginary ideal societies, which competed with revolutionary social democratic movements, were viewed as not being grounded in the material conditions of society and as reactionary. Although it is technically possible for any set of ideas or any person living at any time in history to be a utopian socialist, the term is most often applied to those socialists who lived in the first quarter of the 19th century who were ascribed