Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

Anaximenes regarded forensic and public oratory as genera but held that there were seven species :— exhortation, dissuasion, praise, denunciation,

v1-3 p.395
accusation, defence, inquiry, or as he called it ἐξεταστικόν. The first two, however, clearly belong to deliberative, the next to demonstrative, the three last to forensic oratory.

I say nothing of Protagoras, who held that oratory was to be divided only into the following heads: question and answer, command and entreaty, or as he calls it εὐχωλή. Plato in his Sophist [*](222 o.) in addition to public and forensic oratory introduces a third kind which he styles προσομιλητική, which I will permit myself to translate by

conversational.
This is distinct from forensic oratory and is adapted for private discussions, and we may regard it as identical with dialectic.