In his Discourse on Inequality, Rousseau argues that humanity was in a much better condition in the state of nature, before all the artificialities of society changed us. Indeed, the question we might ask the eighteenth-century philosopher is whether forming commercial enterprises, governments and societies has modified human nature itself, or merely our proclivities. Rousseau’s view of “primitive” humanity is best grasped in a bundle.
The full essay is at "Living the Urban Life: Increasing Economic Inequalities?"