The son of a distinguished soldier, Claude Destutt, he was born in
Paris. His family was of Scottish descent, tracing its origin to Walter Stutt, who had accompanied the Earls of Buchan and Douglas to the court of France in 1420 and whose family afterwards rose to be counts of Tracy. He was educated at home and at the
University of Strasbourg, where he was noted for his athletic skill. He went into the army and when the
French Revolution broke out he took an active part in the provincial assembly of Bourbonnais. Elected a deputy of the nobility to the
Estates General, he sat alongside his friend, the
Marquis de La Fayette. In the spring of 1792, he received the rank of
maréchal 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. Under the
Reign of Terror, he was arrested and imprisoned for nearly a year, during which he studied
Étienne Bonnot de Condillac and
John Locke and abandoned the natural sciences for philosophy. On the motion of Cabanis, he was named in the class of the moral and political sciences. He soon began to attract attention by the memoires which he read before his colleagues—papers which formed the first draft of his comprehensive work on
ideology, named ''Eléments d'idéologie''. He conceived of ideology as the "science of ideas". The society of "ideologists" at Auteuil embraced, besides Cabanis and Tracy,
Constantin-François de Chassebœuf, Comte de Volney and
Dominique Joseph Garat, professor in the National Institute. In 1806, he was elected to the
American Philosophical Society in
Philadelphia. Under the
Empire, Tracy was a member of the senate, but he took little part in its deliberations. Under the
Restoration, he became a
peer of France, but protested against the reactionary split of the government and remained in opposition. In 1808, he was elected a member of the
Académie française in place of Cabanis and in 1832 was also named a member of the Academy of Moral Sciences on its reorganization. He appeared only once at its conferences, owing to his age and to disappointment at the comparative failure of his work. Destutt de Tracy was one of the principal advocates of
liberalism during and after the Revolution. He died in
Paris. == Philosophy ==