Of the classical founders of social science, conflict theory is most commonly associated with Karl Marx (1818–1883). Based on a dialectical materialist account of history, Marxism posited that capitalism, like previous socioeconomic systems, would inevitably produce internal tensions leading to its own destruction. Marx ushered in radical change, advocating proletarian revolution and freedom from the ruling classes. At the same time, Karl Marx was aware that most of the people living in capitalist societies did not see how the system shaped the entire operation of society. Just as modern individuals see private property (and the right to pass that property on to their children) as natural, many of the members in capitalistic societies see the rich as having earned their wealth through hard work and education, while seeing the poor as lacking in skill and initiative. Marx rejected this type of thinking, viewing it as something Friedrich Engels termed "false consciousness", the use of misdirection by the ruling class to obfuscate the exploitation intrinsic to the relationship between the proletariat and the ruling class. Marx wanted to replace this false consciousness with something Friedrich Engels termed "class consciousness", the workers' recognition of themselves as a class unified in opposition to capitalists and ultimately to the capitalist system itself. In general, Marx wanted the proletarians to rise up against the capitalists and overthrow the capitalist system.