Theories of rhetoric and composition pedagogy encompass a wide range of interdisciplinary fields centered on the instruction of writing. Noteworthy to the discipline is the influence of classical Ancient Greece and its treatment of rhetoric as a persuasive tool. Derived from the Greek work for public speaking, rhetoric's original concern dealt primarily with the spoken word. In the treatise Rhetoric, Aristotle identifies five Canons of the field of rhetoric: invention, arrangement, style, memory, and delivery. Since its inception in the spoken word, theories of rhetoric and composition have focused primarily on writing