People developed leisure pursuits, and wanted esteem, which was the first step towards inequality, and at the same time towards vice. Vanity, contempt, shame and envy were born, and acts of revenge. This is the stage of savage people we know of.
Gist of Idea
Leisure led to envy, inequality, vice and revenge, which we now see in savages
Jean-Jacques Rousseau (Discourse on the Origin of Inequality , Part II)
[very compressed] This is important in understanding Rousseau, because his happier 'state of nature' is prior to what is described here, which is the violent warlike state which impressed Hobbes.
Rousseau,Jean-Jacques: 'The Basic Political Writings', ed/tr. Cress,Donald A. [Hackett 1987], p.64