In the spring of 1792 he received the rank of marechal de camp in command of the cavalry in the army of the north; but the influence of the extremists becoming predominant he took indefinite leave of absence, and settled at Auteuil, where, with Condorcet and Cabanis, he devoted himself to scientific studies.
In France the doctrine was represented by Turgot and Condorcet.
The best account of the life and writings of Alembert is contained in Condorcet's Eloge, presented to the Academy and published in 1784.
The president was Condorcet, and amongst the members were the duc de la Rochefoucault, the Abbe Gregoire, Brissot, Claviere, Petion and La Fayette; Mirabeau was an active sympathizer.
Condorcet and other Encyclopedists, he later closely associated himself.