My dear Jefferson--.... I have mentioned good-humor as one of the preservatives of our peace and tranquillity. It is among the most effectual, and its effect is so well imitated, and aided, artificially, by politeness, that this also becomes an acquisition of first-rate value. In truth, politeness is artificial good-humor; it covers the natural want of it, and ends by rendering habitual a substitute nearly equivalent to the real virtue. It is the practice of sacrificing to those whom we meet in society all the little conveniences and preferences which will gratify them, and deprive us of nothing worth a moment's consideration; it is the giving a pleasing and flattering turn to our expressions, which will conciliate others, and make them pleased with us as well as themselves. How cheap a price for the good-will of another! When this is in return for a rude thing said by another, it brings him to his senses, it mortifies and corrects him in the most salutary way, and places him at the feet of your good-nature in the eyes of the company. But in stating prudential rules for our government in society, I must not omit the important one of never entering into dispute or argument with another. I never yet saw an instance of one of two disputants convincing the other by argument. I have seen many of their getting warm, becoming rude, and shooting one another. Conviction is the effect of our own dispassionate reasoning, either in solitude, or weighing within ourselves, dispassionately, what we hear from others, standing uncommitted in argument ourselves. It was one of the rules which, above all others, made Doctor Franklin the most amiable of men in society, never to contradict any body. If he was urged to announce an opinion, he did it rather by asking questions, as if for information, or by suggesting doubts. When I hear another express an opinion which is not mine, I say to myself, He has a right to his opinion, as I to mine; why should I question it? His error does me no injury, and shall I become a Don Quixote, to bring all men by force of argument to one opinion? If a fact be misstated, it is probable he is gratified by a belief of it, and I have no right to deprive him of the gratification. If he wants information, he will ask it, and then I will give it in measured terms; but if he still believes his own story, and shows a desire to dispute the fact with me, I hear him and say nothing. It is his affair, not mine, if he prefers error.