The Ladies' Book of Etiquette, and Manual of Politeness

To be able to converse really well, you must read much, treasure in your memory the pearls of what you read; you must have a quick comprehension, observe passing events, and listen attentively whenever there is any opportunity of acquiring knowledge. A quick tact is necessary, too, in conversation. To converse with an entirely uneducated person upon literature, interlarding your remarks with quotations, is ill-bred. It places them in an awkward situation, and does not add to your popularity. In conversing with persons of refinement and intelligence, do not endeavor to attract their admiration by pouring forth every item of your own information upon the subject under consideration, but listen as well as talk, and modestly follow their lead. I do not mean, to assent to any opinion they may advance, if you really differ in your own tastes, but do not be too ready to show your superior judgment or information. Avoid argument; it is not conversation, and frequently leads to ill feeling. If you are unfortunately drawn into an argument, keep your temper under perfect control, and if you find your adversary is getting too warm, endeavor to introduce some other topic. Avoid carefully any allusion to the age or personal defects of your companion, or any one who may be in the room, and be very careful in your language when speaking of a stranger to another person. I have heard a lady inquire of a gentleman, "who that frightful girl in blue could be," and receive the information that the lady in question was the gentleman's own sister.