He endeavoured to define his ideas, and in 1833 published his Reveries politiques, suivies d'un projet de constitution, and Considerations politiques et militaires sur la Suisse; in 1836, as a captain, in the Swiss service, he published a Manuel d'artillerie, in order to win popularity with the French army.
Berthelot, " alchemy rested partly on the industrial processes of the ancient Egyptians, partly on the speculative theories of the Greek philosophers, and partly on the mystical reveries of the Gnostics and Alexandrians."
From these reveries he was at length awakened by news which indicated that the consequences of Macdonald's defeat had been far more serious to the moral of that command than he had imagined.
And in such passages as the famous "Voila de la pervenche" of the Confessions, as the description of the isle of St Pierre in the Reveries, as some of the letters in the Nouvelle Helotise and others, he had achieved absolute perfection in doing what he intended to do.
The Confessions and Reveries, which, read in private, had given much umbrage to persons concerned, and which the author did not intend to be published until the end of the century, appeared in Geneva in 1782.