Stendhal, the pseudonym for Marie-Henri Beyle, was a 19th-century French writer renowned for his acute psychological analysis of his characters. He is considered one of the earliest and foremost practitioners of realism, a literary movement that would dominate the latter half of the century. His most famous novels, "The Red and the Black" and "The Charterhouse of Parma," explore the ambitious and complex inner lives of young protagonists navigating a rigid and hypocritical society. Despite limited success during his lifetime, Stendhal's work was later championed by figures like Balzac and is now celebrated for its intellectual depth and pioneering style.