The original idea appears to be due to Claude Simeon Passemant (Mem.
Here, too, he made the acquaintance of Claude Mydorge, one of the foremost mathematicians of France, and renewed an early intimacy with Malin Mersenne (q.v.), now Father Mersenne, of the order of Minim friars.
The World was consigned to his desk; and although doctrines in all essential respects the same constitute the physical portion of his Principia, it was not till after the death of Descartes that fragments of the work, including Le Monde, or a treatise on light, and the physiological tracts L'Momme and La Formation du foetus, were given to the world by his admirer Claude Clerselier (1614-1684) in 1664.
The place of Mersenne as his Parisian representative was in the main taken by Claude Clerselier (the Frenchtranslator of the Objections and Responses), whom he had become acquainted with in Paris.