In his prison, Mirabeau acquired the friendship of the governor, whose mediation only added to his father's irritation. He was, however, induced to liberate him, and permit him to join an expedition to Corsica. He was entered as sub-lieutenant of foot in the regiment of Lorraine. The same mixture of wild passion, unwearied study, and eager aspiration for distinction, marked this period. He wrote a history of Corsica; he fabricated an itinerary of the island, founded on his personal inquiries and perambulations; the manuscript, the voluminousness of which testified his industry, were deemed of such value by the Corsicans themselves, that they desired its publication; but it was destroyed by the marquis. In addition, he studied his profession--he felt a vocation for a military life--the aspect of danger calmed his fiery spirit, and he was ambitious of glory--he dedicated all his time to the study of tactics, and declares that there was no book in any language, living or dead, that treated of the art of war that he had not read at this period, making, as he went on, voluminous extracts. In after times he wrote to his sister--"I deceive myself greatly, or I was born for a military life; for in war alone I feel cool, calm, gay, and without impetuosity, and I am sensible that my character grows exalted." On returning from Corsica, he was allowed to visit his uncle, the bailli, at Mirabeau, and soon acquired the favour of this unprejudiced man, who was astonished by his talents, his industry, and his genius. His heart warmed, and the praises that overflowed had some effect on his father, still distrustful, still fearful of showing favour. The first mark of kindness which he gave was to insist that his son should throw aside all his favourite pursuits, and dedicate himself to political and agricultural economy, studying them in the works which he had himself written. Mirabeau, per force, obeyed, and thus somewhat propitiated his parent, so that he consented to see him during a visit he paid to Provence. He put the young man to hard trials, and made him labour indefatigably, preaching to him the while, and forcing political economy down his throat. The marquis was averse to his following the military profession, and by turning him from it plunged him in adversity. The excessive activity of Mirabeau's mind, and his physical vigour, could be satisfied in no other career: his exuberance of spirits and unwearied strength rendered every other vocation tame and trivial; however, he laboured at various occupations devised for him by his father, and was rewarded, at the earnest solicitation of all the relations, by being restored to his name--he having for some years gone by that of Pierre Buffière. His father was so far won by his manifestations of talent as to permit him to visit Paris, and pay his court at Versailles:--"He behaves very well," the marquis writes; "his manners are respectful without servility--easy, but not familiar. [Sidenote: 1771. Ætat.