The term is used in computing to represent aphorisms, maxims, graffiti or other slogans. These two principles have opposite effects analogous to Grice's two maxims of quantity. Equity generally operates in accordance with the principles known as the "maxims of equity". The cooperative principle and the maxims of conversation are not mandatory. The cooperative principle is divided into four maxims of conversation, called the Gricean maxims. Smith postulated four "maxims" of taxation&colon; proportionality, transparency, convenience, and efficiency. These rules are called the Five Maxims of Karate. Sometimes it is impossible to obey all maxims at once. Modern artists are inspired also by the Delphic Maxims. Latin maxims and powerful sounding language are often used. By this time, briefs relied more on facts than on Latin maxims. Adherents also follow "21 maxims". Rather, Foucault simply provides a few valuable maxims regarding the reading of history. The "Enchiridion" appears to be a loosely-structured selection of maxims. The mind behind the maxims is cold, cruel and relentless.