Even before he arrived at manhood he had become notorious for every kind of profligacy; while his father, in an almost equal degree, provoked the censure of those who interested themselves in the career of a youth of undeniable ability, by punishments of such severity as wore the appearance of vengeance rather than of fatherly correction.

In six or seven years he obtained no fewer than fifteen warrants, or letters under seal, for the imprisonment of his son in different jails or fortresses, while the young man seemed to take a wanton pleasure in showing how completely all efforts for his reformation were thrown away.

Though unusually ugly (he himself compared his face to that of a tiger who had had the small-pox), he was irresistible among women.

While one of the youngest subalterns in the army, he made love, rarely without success, to the mistresses or wives of his superior officers, and fought duel after duel with those who took offense at his gallantries, From one castle in which he was imprisoned he was aided to escape by the wife of an officer of the garrison, who accompanied his flight.

From another he was delivered by the love of a lady of the highest rank, the Marchioness de Monnier, whom he had met at the governor's table.
When, after some years of misery, the marchioness terminated them by suicide, he seduced a nun of exquisite beauty to leave her convent for his sake; and as France was no longer a safe residence for them, he fled to Frederick of Prussia, who, equally glad to welcome him as a Frenchman, a genius, and a profligate, received him for a while into high favor.