Abstract

The five canons, parts, faculties, or functions of rhetoric are among the most constant features in the systematic treatment of the art (Scaglione 14). In many respects, they constitute the basic pattern of all theoretical and critical investigations into rhetorical art and practice (Thonssen 86). The five--invention (content, discovery), disposition (arrangement, organization), style (diction, elocution), memory, and delivery (presentation)--were canonized in Latin rhetoric as inventio, dispositio, elocutio, memoria, and pronuntiatio or actio. They were important in Greek rhetoric as heurisis, taxis, lexis, mneme, and hypocrisis. While the exact origin of the canons is unknown, the five recur in rhetorical theory from antiquity to the present, where they command attention individually and collectively. Studying rhetoric, most agree, requires studying its canons. They are the sub-disciplines of the main, the lesser arts of the greater (Connors 64). They allow separate analysis and study of a complete five-part system (Murphy 83). They are the aspects of composing which work together in a recursive, synergistic, mutually dependent relationship (Welch Paradox 5-6). In part, the very history of rhetoric consists in changing relationships and interrelationships between them (Mahony 14). The canons apply to both encoding and decoding, forming a complete system for both generating and analyzing discourse (Welch Ideology 270). They represent not only the concepts with which the rhetor must deal and which he must master, but also the aspects of the rhetorical act which the critic examines and evaluates (Thonssen 86). In speech studies, minor changes in the meanings of the five terms have been developed in various treatises, but the pattern remains the same (Thonssen 86). In composition studies, the five canons are one of two prmary theories which dominate the discipline (Welch Ideology 269). The structure which has dominated both disciplines' textbooks, however, is a truncated one. Rarely has the five-part scheme been presented completely and explicitly. In speech studies, the fourth canon--memory--has virtually been dropped and usually receives incidental treatment (Thonssen 87). In composition studies, the first three canons--invention, arrangement, style--organize the vast majority of current textbooks, but the last two--memory and delivery--are typically deleted without a word of explanation (Welch Paradox 5, Ideology 270). This deletion, when explained, has been attributed to changed conditions in the law courts (Kennedy 105), to memory's absorption under disposition (Kennedy 210; Mahony 14) and, most often, to the western world's shift from orality to literacy. The tendency has been for modern rhetorical theory to abandon, remove, neglect, limit, or misunderstand both memory and delivery. On the other hand,