Edward Summers Squier, Etiquette Made Easy
“ The principle of consideration for others that exalts cleanliness as a virtue is the principle that actually fashions all the essential forms of politeness. At a decent dinner-table, one must not smack his lips, [8] or make loud noises in taking soup from the spoon, for the simple reason that such behavior will annoy others. Often, a sympathetic person, absolutely untaught in the niceties of etiquette, will do the right thing by a natural instinct of kindliness, where another individual of polite breeding will do the wrong from sheer lack of that fellow-feeling which gives understanding. ”
