Active as an experimental biologist, Rostand became famous for his work as a science writer, as well as a philosopher and an activist. His scientific work covered a variety of biological fields such as amphibianembryology, parthenogenesis and teratogeny, while his literary output extended into popular science, history of science and philosophy. His work in the area of cryogenics gave the idea of cryonics to Robert Ettinger.
Following in the footsteps of his father, Rostand was elected to the Académie française in 1959.
Rostand was active in several causes, in particular against nuclear proliferation and the death penalty. An agnostic, he demonstrated humanist convictions. He wrote several books on the question of eugenism and the responsibilities of mankind regarding its own fate and its place in nature.
He is famous for the following quotation: "Kill one man, and you are a murderer. Kill millions of men, and you are a conqueror. Kill them all, and you are a god." From Thoughts of a Biologist, 1938.
Works
Le retour des pauvres , 1919 - Return of the poor
La loi des riches, 1920 - The law of the rich
Pendant qu’on souffre encore, 1921 - While suffering endures
Ignace ou l'Écrivain , 1923 - Ignace or the writer
Deux angoisses : la mort, l’amour, 1924 - Two anguishes: love and death
De la vanité et de quelques autres sujets , 1925 - Of vanity and several other subjects
Les familiotes et autres essais de mystique bourgeoise, 1925 - The familiotes and other essayd of the bourgeois mystique
De l’amour des idées , 1926 - On the love of ideas
Le mariage, 1927 - Marriage
Valère ou l’Exaspéré , 1927 - Valère or The exasperated
Julien ou Une conscience, 1928 - Julien or A conscience
Les chromosomes, artisans de l’hérédité et du sexe, 1929 - Chromosomes, artesans of heredity and sex
De la mouche à l’Homme, 1930 - From fly to man
L’état présent du transformisme, 1931 - The current state of transformism
Journal d’un caractère, 1931 - Journal of a character
L’Évolution des espèces, 1932 - The evolution of species
Les problèmes de l’hérédité et du sexe, 1933 - The problems of heredity and sex
L’aventure humaine, 1933 - The human adventure
La vie des libellules, 1935 - The life of dragonflies
Insectes, 1936 - Insects
La nouvelle biologie, 1937 - The new biology
Biologie et médecine, 1938 - Biology and medicine
Hérédité et racisme, 1938 - Heredity and racism
Pensée d’un biologiste, 1938 - Thoughts from a biologist
La vie et ses problèmes, 1938 - Life and its problems
Science et génération, 1940 - Science and generation
Les idées nouvelles de la génétique, 1941 - New ideas in genetics
L’Homme, introduction à l’étude de la biologie humaine , 1941 - Man, introduction to the study of human biology
L’Homme, maître de la vie, 1941 - Man, master of life
Hommes de vérité 1942 - Men of truth
L’avenir de la biologie, 1943 - The future of biology
La genèse de la vie, histoire des idées sur la génération spontanée , 1943 - Genesis of life, a history of the ideas on spontaneous generation
La vie des vers à soie , 1944 - The life of silkworms
Esquisse d’une histoire de la biologie , 1945 - Sketch of a history of biology
L’avenir de la biologie, 1946 - The future of biology
Qu’est-ce qu’un enfant ?, 1946 - What is a child?
Charles Darwin , 1947
Nouvelles pensées d’un biologiste, 1947 - New thoughts from a biologist
L’hérédité humaine , 1948 - Human heredity
Hommes de vérité II , 1948 - Men of truth II
La biologie et l’avenir humain, 1949 - Biology and the human future
L’Homme devant la biologie, 1949 - Man facing biology
La parthénogenèse, reproduction virginale chez les animaux, 1949 - Parthenogenesis, virginal reproduction in animals
La parthénogenèse animale, 1949 - Animal parthenogenesis
La génétique des batraciens, 1951 - Batrachian genetics
Les grands courants de la biologie , 1951 - Great trends in biology
Les origines de la biologie expérimentale et l’abbé Spallanzani , 1951 - The origins of experimental biology and the abbott Spallanzani
L’hérédité humaine, 1952 - Human heredity
Pages d’un moraliste , 1952 - Pages by a moralist
Ce que nous apprennent les crapauds et les grenouilles, 1953 - What toads and frogs teach us
La vie, cette aventure, 1953 - Life, that adventure
Ce que je crois, 1953 - What I believe
Instruire sur l’Homme, 1953 - To instruct on Man
Notes d’un biologiste , 1954 - Notes from a biologist
Les crapauds et les grenouilles et quelques grands problèmes biologiques, 1955 - Toads, frogs and a few great problems in biology
Le problème biologique de l’individu, 1955 - The biological problem of the individual
L’Homme en l’an 2000 , 1956 - Man in the year 2000
Peut-on modifier l’Homme ?, 1956 - Can we modify Man?
L’atomisme en biologie, 1956- Atomism in biology
Bestiaire d’amour, 1958 - A bestiary of love
Aux sources de la biologie, 1958 - At the sources of biology
Anomalies des amphibiens anoures, 1958 - Anomalies of anurian amphibians
Science fausse et fausses sciences, 1958 - Erroneous science and false science
Les origines de la biologie expérimentale , 1959 - Origins of experimental biology
Carnet d’un biologiste , 1959 - Notepad of a biologist
Espoirs et inquiétudes de l’homme , 1959 - The hopes and worries of Man
