Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
We must also consider the resources possessed by the parties concerned, more especially when dealing with questions of fact; for it is more credible that a smaller number of persons were killed by a larger, a weaker party by a stronger, sleepers by men that were wide awake, the unsuspecting by the well-prepared, while the converse arguments may be used to prove the opposite.
Such considerations arise both in deliberative and forensic oratory: in the latter they occur in relation to two questions, namely, whether some given person had the will, and whether lie had the power to do the deed; for hope will often create the will to act. Hence the well-known inference in Cicero: [*](pro Mil. x. 29. )
Clodius lay in wait for Milo, not Milo for Clodius, for Clodius had a retinue of sturdy slaves, while Milo was with a party of women; Clodius was mounted, Milo in a carriage, Clodius lightly clad, Milo hampered by a cloak.
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.