A paper illustrates this set of concepts with the idea of a cook asking for sugar not expecting a “trick spoon made of rubber” or “a good book.” Geoffrey Leech expanded on Robin Lakoff’s proposed variant of this set of concepts, which includes giving options. Under a “Neo” theory named for their originator, these concepts can be replaced by Horn’s lower-bounding Q-principle and upper-bounding R-principle. A member of this set of concepts titles a book (15[1])by (*) Deirdre Wilson and Dan Sperber that argues the other three are not needed. The formulator of these concepts contrasted the effects of violating and flouting them. Implicatures arise due to this set of rules introduced in “Logic and Conversation,” which delineate aspects of the cooperative principle. For 10 points, name this set of four principles in (10[1])pragmatics that govern everyday speech, including quantity, quality, relation, and manner. ■END■