Goldman believed that the economic system of capitalism was incompatible with human liberty. "The only demand that property recognizes," she wrote in Anarchism and Other Essays, "is its own gluttonous appetite for greater wealth, because wealth means power; the power to subdue, to crush, to exploit, the power to enslave, to outrage, to degrade."[169] She also argued that capitalism dehumanized workers, "turning the producer into a mere particle of a machine, with less will and decision than his master of steel and iron."[169]