Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

Again, it requires no skill to rebut arguments which are obviously contradictory, superfluous or foolish, and consequently I need give no examples nor instructions as to the method to be employed. There is also the type of charge which is known as obscure, where it is alleged that an act was committed in secret without witnesses or any evidence to prove it: this suffers from an inherent weakness, since the fact that our opponent can produce no proof is sufficient for our purpose: the same applies to arguments which are irrelevant to the case.

It is, however, sometimes an orator's duty to make it appear that some argument of his opponent is contradictory or irrelevant or incredible or superfluous or really favourable to his own client. Oppius [*](cp. § 21 and v. x 69. ) is charged with having embezzled the supplies intended to feed the troops. It is a serious charge, but Cicero shows that it contradicts other charges, since the same accusers also charged Oppius with desiring to corrupt the army by bribes.

The accuser of Cornelius offers to produce witnesses to show that he read out the law when tribune [*](cp. IV. ii. 13. ) : Cicero makes this argument

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superHuous by admitting it. Quintus Caecilius demands to be entrusted with the task of accusing Verres on the ground that he had been the latter's quaestor: Cicero actually makes this argument tell in his own favour. [*]( Cicero argues that since the relation between praetor and quaestor is almost that which should exist between father and son, a quaestor should not be allowed to prosecute his praetor. )

As regards other charges, they may all be dealt with by very similar methods. For they may be demolished either by conjecture, when we shall consider whether they are true, by definition, when we shall examine whether they are relevant to the case, by quality, when we shall consider whether they are dishonourable, unfair, scandalous, inhuman, cruel, or deserve any other epithet coming under the head of quality.

Such questions have to be considered, not merely in connection with the statement of the charges or the reasons alleged, but with reference to the nature of the case in its entirety. For instance, the question of cruelty is considered with regard to the charge of high treason brought against Rabirius [*]( Rabirius was accused of causing the death of Saturninus forty years after the event. ) by Labienus; of inhumanity in the case of Tubero who accused Ligarius when he was an exile and attempted to prevent Caesar from pardoning him; of arrogance as in the case of the charge brought against Oppius [*]( P. Oppius, quaestor to M. Aurelius Cotta in Bithynia, was charged by Cotta in a letter to the senate with misappropriation of supplies for the troops and with an attempt on his life. Cicero defended him in 69 B.C. The speech is lost. ) on the strength of a letter of Cotta.