+197. Slang and expletives.+ Slang and expletives are fashions in language. Expletives are of all grades from simple interjections to the strongest profanity. Many expletives are ancient religious formulas of objurgation, obsecration, asseveration, anathema, etc. They express a desire to curse or bless, invite or repel. Where the original sense is lost they sink into interjections, the whole sense of which is in the accent. Their use rises and falls with fashion in nations, classes, groups, and families, and it controls the habits of individuals. Whether certain persons use a pious dialect, a learned (pedantic) dialect, a gambler's slang, a phraseology of excessive adjectives and silly expletives, or profane expressions, oaths, and phrases which abuse sacred things, depends on birth and training. In this sense each dialect is the language for each group and corresponds to the mores of the group. There may be some psychology of expletives,[410] but they seem to be accounted for, like slang, by the expediency of expression, which is the purpose of all language. There is a need for expression which will win attention and impress the memory. A strong expletive shocks an opponent, or it is an instinctive reaction on a situation which threatens the well-being of the speaker. It is a vent to emotion which gives relief from it when other relief is not possible. This last is one of the chief useful reasons for expletives. However, even then they are a vicious habit, for stronger and stronger expressions are required to win the same subjective effects. Old expressions lose force. Slang is the new coinage. The mintage is often graphic and droll; it is also often stupid and vulgar. A selection goes on. Some of it is rejected and some enters into the language. Expletives also go out of fashion. The strain for effect can be satisfied only by constantly greater and greater excess. It becomes a bad personal habit to use grotesque and extravagant expressions. Slang and expletives destroy the power of clear and cogent expression in speech or writing; and they must affect powers of thinking. Although slang is a new coinage which reinvigorates the language, the fashion of slang and expletives must be rated, like the fashion of using tobacco and alcohol, as at best a form of play, a habit and custom which springs from no need and conduces to no interest. The acts result in an idle satisfaction of the doer, and the good or ill effects all fall within his own organism. The prevalence of such fashions in a society becomes a fact of its mores, for there will be rational effects on interests. The selective effect of them is in the resistance to the fashions or subjection to them. They are only to a limited extent enforced by social sanctions. There is personal liberty in regard to them. Resistance depends on independent judgment and self-control, and produces independence and self-control; that is, it affects character.