Rousseau first gained fame with his Discourse on the Arts and Sciences (1750), arguing that civilization had corrupted humanity's natural goodness. His Discourse on Inequality (1755) further explored how private property and social hierarchies bred injustice. His most influential political work, The Social Contract (1762), opens with the famous declaration: "Man is born free, and everywhere he is in chains," championing popular sovereignty and the general will.
In Émile, or On Education (1762), Rousseau revolutionized educational philosophy by advocating learning through natural experience rather than rigid discipline. His sentimental novel Julie, or the New Heloise (1761) became a bestseller across Europe. Later in life, he composed his groundbreaking autobiography, Confessions (1782), followed by Reveries of a Solitary Walker, both pioneering works of introspective literature that helped launch the Romantic movement.