Eugénie Cotton

Eugénie Cotton (née Feytis, 13 October 1881 – 16 June 1967) was a French physicist, socialist and educator who was active in the French Resistance during World War II. She headed the Sèvres elite teachers training college for women from 1936 and was a founding member and president of both the French Women's Union and the Women's International Democratic Federation in the 1940s. For her peace and women's rights advocacy, she was awarded the Stalin Peace Prize in 1951. She was also honoured as a Knight of the Legion of Honour in 1934, and received the Gold Medal of the World Peace Council in 1961.

She enrolled at the École normale supérieure de jeunes filles (ENSJF) in Sèvres in 1901 where she was one of four female students on the science course. She became a pupil of Marie Curie, and met Pierre Curie and Paul Langevin, with whom she studied until 1903. During this time Pierre Curie taught her to ride a bicycle whilst inspiring her future research into crystals and magnetism. She later babysat the young Irène Joliot-Curie.

In 1904, she was first in the female competition of the agrégation of physical and natural sciences. After graduation, she taught at a collège (middle school) in Poitiers and then at the ENSJF from 1905. In Zurich, she became part of the social circle of Pierre and Jeanne Weiss, even attending gatherings where Albert Einstein played the violin.

Due to World War I and family responsibilities, she paused her doctoral work until the age of 44. She joined the Association française des femmes diplômées des universités as soon as it was founded in 1920, She chose to defend her doctoral thesis in the University of Strasbourg in 1925, instead of the Sorbonne University. Jean Perrin was part of the jury.

Wartime activities A member of the French Communist Party, Cotton helped the German anti-fascists who had taken refuge in France after 1933, and went on to support insurgents fleeing Franco after fighting fascism in Spain.

During World War II, the French national Vichy government that supported the German occupation of France, mandated that Cotton leave her post at the ENSJF by forced retirement in 1941. This was done under the Law of 11 October 1940, requiring women over the age of 50 to retire. She was replaced in the role by Edmée Hatinguais. During the course of the war, her husband was arrested twice by the Gestapo but survived the experience. She was a founding member in 1945 and the first president of the Women's International Democratic Federation.

Cotton's name was also given to a college of Argenteuil and in Montreuil, a street in the 19th arrondissement of Paris, a street in Saint-Herblain on the outskirts of Nantes, a street in Le Havre, as well as a collective crèche in Morsang-sur-Orge in the department of Essonne.

In 1985, the crater Cotton on Venus was named in her honour.

In 2026, Cotton was announced as one of 72 historical women in STEM whose names have been proposed to be added to the 72 men already celebrated on the Eiffel Tower. The plan was announced by the Mayor of Paris, Anne Hidalgo following the recommendations of a committee led by Isabelle Vauglin of Femmes et Sciences and Jean-François Martins, representing the operating company which runs the Eiffel Tower.

Archives Eugénie Cotton's archives are preserved in the collection of feminist literature held at the library La bibliothèque Marguerite Durand, 79 rue Nationale, in the 13th arrondissement of Paris. The collection includes professional and private correspondence, including letters from Madeleine Dreux-Zay, Suzanne Lacorre, Marie-Claude Vaillant-Couturier and Pierre Seghers, alongside documents dealing with the ENS and press cuttings. Évelyne Diebolt (dir.), Dictionnaire biographique. Militer au XXe siècle. Femmes, féminismes, Églises et société.

Loukia Efthymiou, Eugénie Cotton (1881-1967): Stories from a lifetime - Stories from a century, European University Editions, 2019, 459 p. Loukia Efthymiou, «Le culte de la cheffe dans le monde communiste. Eugénie Cotton «mère mondiale», Clio, Femmes, Genre, Histoire, n° 57/1: Le genre de la Guerre froide, Paris, Belin, 2023, σ. 161-172. Karina Cooper, Corinne Mona, Allison Rein (2026). The Elements of Marie Curie.