[1] Berthier was born at Issoudun; he taught philosophy at Rennes and Rouen, and theology at Paris.
[1] Berthier was one of the authors of the multi-volume Histoire de l'église Gallicane, which was started by Jacques Longueval.
In 1745 he was appointed editor of the influential Jesuit periodical the Journal de Trévoux, holding the post until 1762 and doing much to expand the circulation.
[2] The Dauphin appointed Berthier tutor of his sons and librarian of the court library, but two years later his position at court became so disagreeable that he left France and spent the following ten years in Germany.
After his death several of his works were published by Father de Querbuef: (1) A translation of the Psalms with notes (8 vols.