Jules-Amédée Barbey d'Aurevilly was a novelist and literary critic at the Bonapartist paper Le Pays who was influential among fin-de-siècle decadents. He specialised in mystery tales that explored hidden motivation and hinted at evil without being explicitly concerned with anything supernatural. He had a decisive influence on writers such as Auguste Villiers de l'Isle-Adam, Henry James and Marcel Proust.

Charles Pierre Baudelaire was a 19th century French poet, translator, and literary and art critic whose reputation rests primarily on Les Fleurs du Mal; (1857; The Flowers of Evil) which was perhaps the most important and influential poetry collection published in Europe in the 19th century. Similarly, his Petits poèmes en prose (1868; "Little Prose Poems") was the most successful and innovative early experiment in prose poetry of the time. Known for his highly controversial, and often dark poetry, as well as his translation of the tales of Edgar Allan Poe, Baudelaire's life was filled with drama and strife, from financial disaster to being prosecuted for obscenity and blasphemy. Long after his death many look upon his name as representing depravity and vice. Others see him as being the poet of modern civilization, seeming to speak directly to the 20th century.

Honoré de Balzac was a nineteenth-century French novelist and playwright. His magnum opus was a sequence of almost 100 novels and plays collectively entitled La Comédie humaine, which presents a panorama of French life in the years after the fall of Napoléon Bonaparte in 1815. Due to his keen observation of fine detail and unfiltered representation of society, Balzac is regarded as one of the founders of realism in European literature. He is renowned for his multi-faceted characters; even his lesser characters are complex, morally ambiguous and fully human. Inanimate objects are imbued with character as well; the city of Paris, a backdrop for much of his writing, takes on many human qualities. His writing influenced many famous authors, including the novelists Marcel Proust, Émile Zola, Charles Dickens, Gustave Flaubert, Henry James and Jack Kerouac, as well as important philosophers such as Friedrich Engels. Many of Balzac's works have been made into films, and they continue to inspire other writers. An enthusiastic reader and independent thinker as a child, Balzac had trouble adapting himself to the teaching style of his grammar school. His willful nature caused trouble throughout his life, and frustrated his ambitions to succeed in the world of business. When he finished school, Balzac was apprenticed as a legal clerk, but he turned his back on law after wearying of its inhumanity and banal routine. Before and during his career as a writer, he attempted to be a publisher, printer, businessman, critic, and politician. He failed in all of these efforts. La Comédie Humaine reflects his real-life difficulties, and includes scenes from his own experience. Balzac suffered from health problems throughout his life, possibly due to his intense writing schedule. His relationship with his family was often strained by financial and personal drama, and he lost more than one friend over critical reviews. In 1850, he married Ewelina Hańska, his longtime paramour; he passed away five months later.