Rousseau's first published philosophical work, written for the Academy of Dijon's prize essay competition in 1750, argues the provocative thesis that the restoration of the arts and sciences has corrupted rather than improved human morality. Drawing on examples from ancient Greece and Rome, Rousseau contends that luxury, vanity, and intellectual refinement undermine simplicity, virtue, and civic strength. The essay won first prize and made Rousseau famous overnight, establishing the central tension — between natural virtue and social artifice — that would define all his later work.