Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
this statement is however not intended to be accepted by us as the actual truth, but is inserted to make
v1-3 p.329
Antonius speak in character, since he was in the habit of concealing his art. Still Lysias is said to have maintained this same view, which is defended on the ground that uneducated persons, barbarians and slaves, when speaking on their own behalf, say something that resembles an exordiam, state the facts of the case, prove, refute and plead for mercy just as an orator does in his peroration. To this is added the quibble that nothing that is based on art can have existed before the art in question, whereas men have always from time immemorial spoken in their own defence or in denunciation of others: the teaching of rhetoric as an art was, they say, a later invention dating from about the time of Tisias and Corax: oratory therefore existed before art and consequently cannot be an art.