Aristotle, and W. Rhys Roberts. Rhetoric. Mineola, NY: Dover, 2004. Kindle Electronic Edition.
Book III, chapter 1.
Aristotle turns his attention in book 3 to the expressive style of the speaker. “For it is not enough to know what we ought to say; we must also say it as we ought; much help is thus afforded towards producing the right impression of a speech (Aristotle III.1, B. 1403b). Delivery, however, had not been studied systematically in Aristotle’s time. He points out that, “Delivery is - very properly - not regarded as an elevated subject of inquiry” (Aristotle III.1, B. 1403b). However, as rhetoric does study appearances, the subject of delivery must be addressed.
For an understanding of delivery, Aristotle is forced to return his thoughts to poetry. Though poetry and prose are very different, the presentational style of a poet is often helpful (Aristotle III.1, B. 1404a).