Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
I must however express the strongest disapproval of the practice of sending a suborned witness to sit on the benches of the opposing party, in order that on being called into the witness-box from that quarter he may thereby do all the more damage to the case for the accused by speaking against the party with whose adherents he was sitting or, while appearing to help him by his testimony, deliberately giving his evidence in such an extravagant and exaggerated manner, as not only to detract from the credibility of his own statements, but to annul the advantage derived from the evidence of those who were really helpful. I mention this practice not with a view to encourage it, but to secure its avoidance. Documentary evidence is not frequently in conflict with oral. Such a circumstance may be turned to advantage by either side. For one party will rest its case on the fact that the witness is speaking on oath, the other on the unanimity of the signatories. [*]( An over-statement, since in many cases the signatories could only testify that the statement was that actually made by the deponent; with its truth they were not necessarily concerned. )
Again there is often a conflict between the evidence and the arguments. One party will argue that the witnesses know the facts and are bound by the
Such problems are common to a number of cases, and are and will always be the subject of vehement debate. Sometimes there are witnesses on both sides and the question arises with regard to themselves as to which are the more respectable in character, or with regard to the case, which have given the more credible evidence, with regard to the parties to the case, which has brought the greater influence to bear on the witnesses.
If to this kind of evidence anyone should wish to add evidence of the sort known as supernatural, based on oracles, prophecies and omens, I would remind him that there are two ways in which these may be treated. There is the general method, with regard to which there is an endless dispute between the adherents of the Stoics and the Epicureans, as to whether the world is governed by providence. The other is special and is concerned with particular departments of the art of divination, according as they may happen to affect the question at issue.
For the credibility of oracles may be established or destroyed in one way, and that of soothsayers, augurs, diviners and astrologers in another, since the two classes differ entirely in nature. Again the task of establishing or demolishing such evidence as the following will give the orator plenty to do; as for example if certain words have been uttered under