Institutio Oratoria

There are no other species of forensic causes, not even when one person brings the same suit on the same grounds against two different

There is however said to be a third and different class, the comparative. Questions of comparison frequently require to be handled in portions of a cause, as for instance in the centum viral court, [*]( A civil court specially concerned with questions of inheritance. ) when after other questions have been raised the question is discussed as to which of two claimants is the more deserving of an inheritance. It is rare however for a case to be brought into court on such grounds alone, as in divinations [*](Divinatio is a trial to decide between the claims of two persons to appear as accuser, there being no public prosecutor at Rome. cp. Cicero's Divinatio in Caecilium. ) which take place to determine who the accuser shall be, and occasionally when two informers dispute as to which has earned the reward.

Some again have added a fourth class, namely mutual accusation, which they call ἀντικατηγορία Others, however, regard it as belonging to the comparative group, to which indeed the common case of reciprocal suits on different grounds bears a strong resemblance. If this latter case should also be called ἀντικατηγορία (for it has no special name of its own), we must divide mutual accusation into two classes, in one of which the parties bring the same charge against each other, while in the other they bring different charges. The same division will also apply to claims.

As soon as we are clear as to the kind of cause on which we are engaged, we must then consider whether the act that forms the basis of the charge is denied or defended, or given another name or excepted from that class of action. Thus we determine the basis of each case.

XI. As soon as these points are ascertained, the next step, according to Hermagoras, should be to consider what is the question at issue, the line of defence, the point for the judge's decision and the central point, or, as others call it, the foundation of the case. [*]( This highly technical chapter will be largely unintelligible to those who have not read chapter vi. Those who have no stomach for such points would do well to skip §§ 1–20; they will however find consolation in § 21 sqq., where Quintilian says what he really thinks of such technicalities. ) The question in its more general sense is taken to mean everything on which two or more plausible opinions may be advanced.