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Louis Rougier

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Louis Rougier

Louis Rougier

Louis Auguste Paul Rougier (French: ; 1889–1982) was a French philosopher. Rougier made many important contributions to epistemology, philosophy of science, political philosophy and the history of Christianity.


Rougier was born in Lyon. Debilitated by pleurisy in his youth, he was declared unfit for service in World War I and devoted his adolescence to intellectual pursuits.

After receiving the agrégation de philosophie degree from the University of Lyon, Rougier taught until 1924 at various lycées and obtained his doctorate from the Sorbonne in 1920. His doctoral thesis work was published that year as La philosophie géometrique de Poincaré and Les paralogismes du rationalisme. Rougier already had several publications to his name, however, beginning with a 1914 paper on the use of non-Euclidean geometry in relativity theory.

Rougier taught in Algiers from 1917 to 1920 and then in Rome from 1920 to 1924. His first university appointment in France was at the University of Besançon in 1925, where he served on the faculty until his dismissal in 1948 for political reasons. Further university appointments were in Cairo from 1931–36, the New School for Social Research from 1941–43 and the Université de Montréal in 1945. Rougier's final academic appointment was to the Université de Caen in 1954, but he retired at the age of 66 after only one year there.

Rougier lived to the age of 93 and was survived by his third wife, Lucy Friedman. Dr. Friedman, whom he married in 1942, was a former secretary to Moritz Schlick. Although Friedman had a daughter from a previous marriage, Rougier himself had no children.


Under the influence of Henri Poincaré and Wittgenstein, Rougier developed a philosophy based on the idea that systems of logic are neither apodictic (i.e., necessarily true and therefore deducible) nor assertoric (i.e., not necessarily true and whose truth must therefore be induced through empirical investigation.) Instead, Rougier proposed that the various systems of logic are simply conventions that are adopted based on contingent circumstances.

This view, which implies that there are no "objective," International Encyclopedia of Unified Science. Rougier's own contribution to the Encyclopedia never materialized, however, because he soon became one of many participants who ended up quarreling with Otto Neurath, the project's editor-in-chief.


Rougier's conventionalist philosophical position naturally led him to oppose Neo-Thomism, which had been the official philosophy of the Roman Catholic Church since the 1879 encyclical Aeterna Patris but was gaining particular momentum during the 1920s and 1930s. Rougier published several works during this period attacking this contemporary revival of scholasticism, thereby earning the personal enmity of prominent Thomists such as Étienne Gilson and Jacques Maritain.

Rougier's objections to Neo-Thomism were not merely philosophical, however, but formed part of a general opposition to Christianity that he had already begun to develop during his adolescence under the influence of Ernest Renan. This early opposition to Christianity continued to influence intellectual work of Rougier's maturity, leading him in 1926 to publish a translation of Celsus that is still in use today.


Rougier was also a political philosopher in the liberal tradition of Montesquieu, Constant, Guizot, and Tocqueville. Consistent with his conventionalist epistemology, Rougier believed that political power rests not upon eternally valid claims, but upon conventions that he called mystiques. The only possible reason to prefer one political system over another, he believed, depends not on eternal truths but on purely pragmatic grounds. In other words, political systems should be chosen not based on how "true" they are, but rather on how well they work.

After visiting the Colloque Walter Lippmann, in 1938. During the same year, Rougier helped to found the Centre international d'études pour la rénovation du libéralisme. The political network established by these two groups eventually led to the 1947 foundation of the famous Mont Pelerin Society, to which Rougier was elected in the 1960s through the personal backing of Friedrich von Hayek.

Rougier, as one of the founding fathers of épuration (the French equivalent of denazification that was carried out on formerly Vichy territory by the Allies after the war) as illegal and totalitarian. Finally, Rougier was active in an effort that petitioned the United Nations in 1951, alleging that the Allies had committed human rights violations and war crimes during the Libération.

During the 1970s, Rougier formed a second controversial political alliance: with the Nouvelle Droite of the French writer Alain de Benoist. Rougier's long-standing opposition to Christianity, together with his conviction that "the West" possesses a pragmatically superior mentalité to those of other cultures, aligned closely with the views of this movement. Benoist reissued and wrote prefaces to several of Rougier's earlier works, and in 1974 Benoist's think tank GRECE published an entirely new book by Rougier: Le conflit du Christianisme primitif et de la civilisation antique.

Selected works

  • 1919. La matérialisation de l'énergie: essai sur la théorie de la relativité et sur la théorie des quanta. Paris: Gauthier-Villars. English translation: 1921. Philosophy and the new physics; an essay on the relativity theory and the theory of quanta. London: Routledge.
  • 1920. La philosophie géométrique de Henri Poincaré. Paris: F. Alcan.
  • 1920. Les paralogismes du rationalisme: essai sur la théorie de la connaissance. Paris: F. Alcan.
  • 1921. En marge de Curie, de Carnot et d'Einstein: études de philosophie scientifique. Paris: Chiron.
  • 1921. La structure des théories déductives; théorie nouvelle de la déduction. Paris: F. Alcan.
  • 1924. La scolastique et le thomisme. Paris: Gauthier-Villars.
  • 1929. La mystique démocratique, ses origines, ses illusions. Paris: E. Flammarion.
  • 1933. L'origine astronomique de la croyance pythagoricienne en l'immortalité céleste des âmes. Cairo: L'institut français d'archéologie orientale.
  • 1938. Les mystiques économiques; comment l'on passe des démocraties libérales aux états totalitaires. Paris: Librairie de Médicis.
  • 1945. Les accords Pétain, Churchill: historie d'une mission secrète. Montréal: Beauchemin.
  • 1945. Créance morale de la France. Montréal: L. Parizeau.
  • 1947. La France jacobine. Bruxelles: La Diffusion du livre.
  • 1947. La défaite des vainqueurs. Bruxelles: La Diffusion du livre.
  • 1947. La France en marbre blanc: ce que le monde doit à la France. Genève: Bibliothèque du Cheval ailé.
  • 1948. De Gaulle contre De Gaulle. Paris: Éditions du Triolet.
  • 1954. Les accord secrets franco-britanniques de l'automne 1940; histoire et imposture. Paris: Grasset.
  • 1955. Traité de la connaissance. Paris: Gauthier-Villars.
  • 1957. L'épuration. Paris: Les Sept couleurs.
  • 1959. La religion astrale des Pythagoriciens. Paris: Presses Universitaires de France.
  • 1960. La métaphysique et le langage. Paris: Flammarion.
  • 1966. Histoire d'une faillite philosophique: la Scolastique. Paris: J.-J. Pauvert.
  • 1969. Le Génie de l'Occident: essai sur la formation d'une mentalité. Paris: R. Laffont. English translation: 1971. The genius of the West. Los Angeles: Nash.
  • 1972. La genèse des dogmes chrétiens. Paris: A. Michel.
  • 1980. Astronomie et religion en Occident. Paris: Presses universitaires de France.


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