Gustave Flaubert (December 12, 1821 – May 8, 1880) was a French writer who is counted among the greatest Western novelists. He is known especially for his first published novel, Madame Bovary (1857), and for his scrupulous devotion to his art and style, best exemplified by his endless search for "le mot juste" ("the precise word").

That he was one of the greatest writers who ever lived in France is now commonly admitted, and his greatness principally depends upon the extraordinary vigour and exactitude of his style. Less perhaps than any other writer, not of France, but of modern Europe, Flaubert yields admission to the inexact, the abstract, the vaguely inapt expression which is the bane of ordinary methods of composition. He never allowed a cliché to pass him, never indulgently or wearily went on, leaving behind him a phrase which almost expressed his meaning. As a writer, Flaubert was nearly equal parts romantic, realist, and pure stylist. Hence, members of various schools, especially realists and formalists, have traced their origins to his work. The exactitude with which he adapts his expressions to his purpose can be seen in all parts of his work, especially in the portraits he draws of the figures in his principal romances. The degree to which Flaubert's fame has extended since his death presents an interesting chapter of literary history in itself.