Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Such reflexions are best suited to those speakers whose authority is such that their character itself will lend weight to their words. For who would tolerate a boy, or a youth, or even a man of low birth who presumed to speak with all the authority of a judge and to thrust his precepts down our throats?
The term enthymeme may be applied to any concept of the mind, but in its strict sense means a reflexion drawn from contraries. Consequently, it has a supremacy among reflexions which we may compare to that of Homer among poets and Rome among cities.
I have already said enough on this topic in dealing with arguments. [*]( See v. x. 2, and again, for greater detail, v. xiv. 1 (note at end), where an example of this type of sententia is given from the pro Milone (ch. 29) You are sitting to avenge the death of one whom you would be unwilling to restore to life even if you thought it was in your power to restore it! ) But the use of the enthymeme is not confined to proof, it may sometimes be employed for the purpose of ornament, as in the following instance: [*](Pro Lig. iv. 10. )
Caesar, shall the language of those whom it is your glory to have spared goad you to imitate their own cruelty?Cicero's motive in saying this is not that it introduces any fresh reason for clemency, but because he has already demonstrated by other arguments how unjust such conduct would be,