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 here again you must not expect me to lay down any general rules. For sagacity depends on circumstances and will often find its scope in something preceding the pleading of the cause. For instance in the prosecution of Verres Cicero seems to have shown the highest sagacity in preferring to cut down the time available for his speech rather than allow the trial to be postponed to the following year when Quintus Hortensius was to be consul.
And again in the actual pleading sagacity holds the first and most important place. For it is the duty of sagacity to decide what we should say and what we should pass by in silence or postpone; whether it is better to deny an act or to defend it, when we should employ an exordium and on what lines it should be designed, whether we should make a statement of facts and if so, how, whether we should base our plea on law or equity and what is the best order to adopt, while it must also decide on all the nuances of style, and settle whether it is expedient to speak harshly, gently or even with humility.
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.
We praise Demosthenes [*](Phil. i. 2. ) for his sagacity because when he urged a policy of war upon the Athenians after they had met with a series of reverses, he