Bücher der Reihe Publications des Archives Henri Poincare / Publications of the Henri Poincare Archives / Science Autour de / Around 1900

During his lifetime, Henri Poincaré published three major philosophical books which achieved great success: "La science et l'hypothèse" (1902), "La valeur de la science" (1905) and "Science et méthode" (1908). After his death in 1913, a fourth volume of his philosophical works was published by his heirs as "Dernières pensées" (1913). The four books constitute the core of Poincaré's philosophic works and were given an ovation by scientific and general public. Around 1919, Gustave Le Bon wrote to Poincaré's widow. As the director of the "Bibliothèque de Philosophie Scientifique at Flammarion", he asked her permission to publish a second posthumous volume. "L'Opportunisme scientifique" was intended to be the fifth and final volume of Poincaré's philosophical writings. Louis Rougier had elaborated the project, with the collaboration of Gustave Le Bon, and the approval of the philosopher Émile Boutroux and his son Pierre. Because of the reservations of the mathematician's heirs, this book was never published and Dernières pensées remained his last philosophical book. Nevertheless Poincaré's correspondence - which is kept in the Poincaré Archives at University Nancy 2 - contains a large amount of documents concerning the project, its justification and the discussions between Louis Rougier and the mathematician's heirs. The aim of this book is to restore this episode, which gives some crucial informations about editorial practices of Poincaré and about the posterity of his philosophic thinking.

During his lifetime, Henri Poincare published three major philosophical books which achieved great success: "La science et l'hypothese" (1902), "La valeur de la science" (1905) and "Science et methode" (1908). This title gives some crucial informations about editorial practices of Poincare and about the posterity of his philosophic thinking.

This text is based on lectures Couturat gave at the University Caen. It is an outstanding document of the popularization and propagation of symbolic logic around 1900, and it is the only manuscript mentioned in his correspondence that has been rediscovered.

This text is based on lectures Couturat gave at the University Caen. It is an outstanding document of the popularization and propagation of symbolic logic around 1900, and it is the only manuscript mentioned in his correspondence that has been rediscovered.