Although the Greek philosopher Plato advocated a communal state more than 2,300 years ago, it was not until after the Industrial Revolution and its resulting massive inequities and injustices that Marx's Communism was born. The French Revolution became a breeding ground for analysis of freedom and of individual rights. Out of this came Karl Marx and Friederich Engels, two young socialists who proposed a theory of economic justice that the means of production should be taken away from individual owners and redistributed among the people in common ownership. "Let the ruling classes tremble at a Communist revolution. The proletarians have nothing to lose but their chains. They have a world to win. Workingmen of all countries unite!" Despite the idealistic goals of the movement, a few decades later the world has watched Communism's power crumble, leaving behind a disillusioned and impoverished people.