Discourse on Inequality in the context of "Prehistoric warfare"

Jean-Jacques Rousseau (UK: /ˈruːsoʊ/, US: /ruːˈsoʊ/; French: [ʒɑ̃ʒak ʁuso]; 28 June 1712 – 2 July 1778) was a Genevan philosopher, philosophe, writer, and composer. His political philosophy influenced the progress of the Age of Enlightenment throughout Europe, as well as aspects of the French Revolution and the development of modern political, economic, and educational thought.

Rousseau's Discourse on Inequality, which argues that private property is the source of inequality, and The Social Contract, which outlines the basis for a legitimate political order, are cornerstones in modern political and social thought. Rousseau's sentimental novel Julie, or the New Heloise (1761) was important to the development of preromanticism and romanticism in fiction. His Émile, or On Education (1762) is an educational treatise on the place of the individual in society. Rousseau's autobiographical writings—the posthumously published Confessions (completed in 1770), which initiated the modern autobiography, and the unfinished Reveries of the Solitary Walker (composed 1776–1778)—exemplified the late 18th-century "Age of Sensibility", and featured an increased focus on subjectivity and introspection that later characterized modern writing.

The Social Contract, originally published as On the Social Contract; or, Principles of Political Right (French: Du contrat social; ou, Principes du droit politique), is a 1762 French-language book by the Genevan philosopher Jean-Jacques Rousseau. The book theorizes about how to establish legitimate authority in a political community, that is, one compatible with individual freedom, in the face of the problems of commercial society, which Rousseau had already identified in his Discourse on Inequality (1755).

The Social Contract helped inspire political reforms or revolutions in Europe, especially in France. The Social Contract argued against the idea that monarchs were divinely empowered to legislate. Rousseau asserts that only the general will of the people has the right to legislate, for only under the general will can the people be said to obey only themselves and hence be free. Although Rousseau's notion of the general will is subject to much interpretive controversy, it seems to involve a legislature consisting of all adult members of the political community who are restricted to legislating general laws for the common good.