Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
What, then, will be the difference between what is written and what is spoken? If I were given a jury of wise men, I should cut down a large number of passages from the speeches not only of Cicero, but even of Demosthenes, who is much more concise.
v10-12 p.481
For with such a jury there would be no need to appeal to the emotions nor to charm and soothe the ears, since according to Aristotle [*](Rhet. iii. 13. ) even exordia are superfluous, if addressed to such persons, as they will have no influence upon judges who are truly wise: it will be sufficient to state the facts with precision and significance and to marshal our array of proofs.