Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
With resources we may
To these we may add manner, the Greek τρόπος, in regard to which we ask how a thing was done. Manner is concerned sometimes with quality and the letter of the law [*](See § 40. Also III. vi. 55 and 66.) (we may for instance argue that it was unlawful to kill an adulterer by poison), sometimes with questions of fact, as for example if I argue that an act was committed with a good intent and therefore openly, or with a bad intent and therefore treacherously, by night, in a lonely place.
In all cases, however, in which we enquire into the nature and meaning of an act, and which can be considered by themselves apart from all considerations of persons and all else that gives rise to the actual cause, there are clearly three points to which we must give attention, namely Whether it is, What it is and Of what kind it is. But as there are certain
places[*](See above § 20.) of argument which are common to all three questions, this triple division is impracticable and we must therefore consider these questions rather in connexion with those
placesin which they most naturally arise.