Edgar Degas (1834-1917), tout en se réclamant de la tradition, est un acteur majeur de la révolution que connut la peinture dans le dernier tiers du XIXe siècle. Organisateur des huit «Expositions impressionnistes», il fut tour à tour peintre, dessinateur, graveur, photographe, et enfin sculpteur; celui qui se méfiait des milieux officiels n'afficha pas davantage ses idées esthétiques. Il se qualifiait prosaïquement de «réaliste ». « Du temps de Rembrandt, on peignait des Suzanne au bain ; moi, je peins des Femmes au tub », aimait-il à dire.  Jean-Paul Morel a rassemblé aphorismes, propos rapportés, poèmes et lettres qui révèlent une personnalité piquante, loin du bourgeois conformiste jusque-là dépeint.

Aux yeux de ses contemporains, Edgar Degas a pu passer pour un peintre renfermé et sauvage, un être abrupt, aux répliques redoutables  cette réputation plaisait au maître de l'impressionnisme, il l'entretint toute sa vie. Le degas que l'on découvre au fil de ces deux cent cinquante lettres est bien différent ; c'est, sous un triple éclairage, l'artiste, l'ami, l'homme intime. L'artiste rivé à son double défi : une précision toujours plus grande mariée à une invention toujours plus souveraine, capable de faire quinze heures de train pour serrer une main en deuil ; l'homme ému par la beauté des femmes et la grâce des danseuses.Dans ces lettres, Degas peint son autoportrait. C'est le quotidien d'un génie, de ses humeurs paradoxales : "je suis triste, quoique gai, ou le contraire." 

Degas was closest to Renoir in the impressionist's circle, for both favoured the animated Parisian life of their day as a motif in their paintings. Degas did not attend Gleyre's studio; most likely he first met the future impressionists at the Café Guerbois. He started his apprenticeship in 1853 at the studio of Louis-Ernest Barrias and, beginning in 1854, studied under Louis Lamothe, who revered Ingres above all others, and transmitted his adoration for this master to Edgar Degas. Starting in 1854 Degas travelled frequently to Italy: first to Naples, where he made the acquaintance of his numerous cousins, and then to Rome and Florence, where he copied tirelessly from the Old Masters. His drawings and sketches already revealed very clear preferences: Raphael, Leonardo da Vinci, Michelangelo, and Mantegna, but also Benozzo Gozzoli, Ghirlandaio, Titian, Fra Angelico, Uccello, and Botticelli. During the 1860s and 1870s he became a painter of racecourses, horses and jockeys. His fabulous painter's memory retained the particularities of movement of horses wherever he saw them. After his first rather complex compositions depicting racecourses, Degas learned the art of translating the nobility and elegance of horses, their nervous movements, and the formal beauty of their musculature. Around the middle of the 1860s Degas made yet another discovery. In 1866 he painted his first composition with ballet as a subject, Mademoiselle Fiocre dans le ballet de la Source (Mademoiselle Fiocre in the Ballet `The Spring') (New York, Brooklyn Museum). Degas had always been a devotee of the theatre, but from now on it would become more and more the focus of his art. Degas' first painting devoted solely to the ballet was Le Foyer de la danse à l'Opéra de la rue Le Peletier (The Dancing Anteroom at the Opera on Rue Le Peletier) (Paris, Musée d'Orsay). In a carefully constructed composition, with groups of figures balancing one another to the left and the right, each ballet dancer is involved in her own activity, each one is moving in a separate manner from the others. Extended observation and an immense number of sketches were essential to executing such a task. This is why Degas moved from the theatre on to the rehearsal halls, where the dancers practised and took their lessons. This was how Degas arrived at the second sphere of that immediate, everyday life that was to interest him. The ballet would remain his passion until the end of his days.

Degas was closest to Renoir in the impressionist's circle, for both favoured the animated Parisian life of their day as a motif in their paintings. Degas did not attend Gleyre's studio; most likely he first met the future impressionists at the Café Guerbois. He started his apprenticeship in 1853 at the studio of Louis-Ernest Barrias and, beginning in 1854, studied under Louis Lamothe, who revered Ingres above all others, and transmitted his adoration for this master to Edgar Degas. Starting in 1854 Degas travelled frequently to Italy: first to Naples, where he made the acquaintance of his numerous cousins, and then to Rome and Florence, where he copied tirelessly from the Old Masters. His drawings and sketches already revealed very clear preferences: Raphael, Leonardo da Vinci, Michelangelo, and Mantegna, but also Benozzo Gozzoli, Ghirlandaio, Titian, Fra Angelico, Uccello, and Botticelli. During the 1860s and 1870s he became a painter of racecourses, horses and jockeys. His fabulous painter's memory retained the particularities of movement of horses wherever he saw them. After his first rather complex compositions depicting racecourses, Degas learned the art of translating the nobility and elegance of horses, their nervous movements, and the formal beauty of their musculature. Around the middle of the 1860s Degas made yet another discovery. In 1866 he painted his first composition with ballet as a subject, Mademoiselle Fiocre dans le ballet de la Source (Mademoiselle Fiocre in the Ballet `The Spring') (New York, Brooklyn Museum). Degas had always been a devotee of the theatre, but from now on it would become more and more the focus of his art. Degas' first painting devoted solely to the ballet was Le Foyer de la danse à l'Opéra de la rue Le Peletier (The Dancing Anteroom at the Opera on Rue Le Peletier) (Paris, Musée d'Orsay). In a carefully constructed composition, with groups of figures balancing one another to the left and the right, each ballet dancer is involved in her own activity, each one is moving in a separate manner from the others. Extended observation and an immense number of sketches were essential to executing such a task. This is why Degas moved from the theatre on to the rehearsal halls, where the dancers practised and took their lessons. This was how Degas arrived at the second sphere of that immediate, everyday life that was to interest him. The ballet would remain his passion until the end of his days.