Napoleon received Livingston's argument three days after he heard of Leclerc's death. To a soldier who had entered Italy over the Alps, the suggestion of an attack from Canada would strongly appeal; with Nelson on the ocean, he could understand the helplessness of a French army in New Orleans; and after the failure of Leclerc in St. Domingo, the presence of yellow fever and other obstacles to success in Louisiana would not seem improbable. Such a discussion at such a time, therefore, was certain to have the most profound influence, and from January 10 to April 10, 1803, Livingston kept his reasons constantly before the First Consul and his ministers as the only policy to conserve the true interest of France, to impair the strength of England, and to win the affection of the United States. "I have never yet had any specific instructions from you how to act or what to offer," he wrote Madison on February 18, 1803, eighteen days before Monroe left the United States; "but I have put into Napoleon's hands some notes containing plain truths mixed with that species of personal attention which I know to be most pleasing. The only basis on which I think it possible to do anything here is to connect our claims with offers to purchase the Floridas. Upon this subject my notes turn. I have first endeavored to show how little advantage France is likely to make from these colonies; the temptation they offer to Britain to attack them by sea and from Canada; the effect a conquest of them by Britain would have on the islands; and the monopoly which that conquest would give to a rival power to the trade of the West as well as of the East Indies. I have dwelt upon the importance of a friendly intercourse between them and us, both as it respects their commerce and the security of their islands; and I have proposed to them the relinquishment of New Orleans and West Florida as far as the River Perdito, together with all the territory lying to the north of the Arkansas, under an idea that it was necessary to interpose us between them and Canada, as the only means of preventing an attack from that quarter. For this I proposed an indefinite sum, not wishing to mention any till I should receive your instructions. These propositions with certain accompaniments were well received, and were some days under the First Consul's consideration. I am now lying on my oars in hopes of something explicit from you. I consider the object of immense importance; and this perhaps the favorable moment to press it."