Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
But I have already given advice on all these points as far as each occasion permitted, and I shall continue to do the same in the subsequent portions of this work. In the meantime, however, I will give a few instances to make my meaning clearer, since it is not possible, in my opinion, to do so by laying down general rules.