Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
The majority however, while admitting that such arts undoubtedly formed part of oratory, held that its special and peculiar task is to make good the case which it maintains and refute that of its opponent.