I have already shown, in several parts of this work, by what means the inhabitants of the United States almost always manage to combine their own advantage with that of their fellow-citizens: my present purpose is to point out the general rule which enables them to do so. In the United States hardly anybody talks of the beauty of virtue; but they maintain that virtue is useful, and prove it every day. The American moralists do not profess that men ought to sacrifice themselves for their fellow-creatures because it is noble to make such sacrifices; but they boldly aver that such sacrifices are as necessary to him who imposes them upon himself as to him for whose sake they are made. They have found out that in their country and their age man is brought home to himself by an irresistible force; and losing all hope of stopping that force, they turn all their thoughts to the direction of it. They therefore do not deny that every man may follow his own interest; but they endeavor to prove that it is the interest of every man to be virtuous. I shall not here enter into the reasons they allege, which would divert me from my subject: suffice it to say that they have convinced their fellow-countrymen. Montaigne said long ago: "Were I not to follow the straight road for its straightness, I should follow it for having found by experience that in the end it is commonly the happiest and most useful track." The doctrine of interest rightly understood is not, then, new, but amongst the Americans of our time it finds universal acceptance: it has become popular there; you may trace it at the bottom of all their actions, you will remark it in all they say. It is as often to be met with on the lips of the poor man as of the rich. In Europe the principle of interest is much grosser than it is in America, but at the same time it is less common, and especially it is less avowed; amongst us, men still constantly feign great abnegation which they no longer feel. The Americans, on the contrary, are fond of explaining almost all the actions of their lives by the principle of interest rightly understood; they show with complacency how an enlightened regard for themselves constantly prompts them to assist each other, and inclines them willingly to sacrifice a portion of their time and property to the welfare of the State. In this respect I think they frequently fail to do themselves justice; for in the United States, as well as elsewhere, people are sometimes seen to give way to those disinterested and spontaneous impulses which are natural to man; but the Americans seldom allow that they yield to emotions of this kind; they are more anxious to do honor to their philosophy than to themselves.