[1] He is one of the main figures of physiocracy, a school of thought founded by François Quesnay and the Marquis de Mirabeau in July 1757.
[2] Born in Orleans on October 13, 1728,[3] Le Trosne was the son of Guillaume Le Trosne, counselor and secretary to the king, magistrate judge of the area and presidential seat of Orléans, and of Thérèse Marguerite Arnault, daughter of Louis Arnault de Nobleville, bourgeois merchant of Orleans.
For two years he had the privilege, together with M. de Guienne, a lawyer in Parliament and a close friend of Pothier, to review the manuscript of the latter's great work, Pandectae Justinianeae in novum ordinem digestae, published in Paris, by 1748 to 1752.
A founding full member of the Royal Agricultural Society of the Generality of Orléans, that same year he became a fervent disciple of the doctrine developed by Doctor François Quesnay.
But, as in 1780 a meeting of the clergy was to be held in Paris, the Keeper of the Seals feared that this book would upset them, because it suggested to tax the property of the ecclesiastics.