Institutio Oratoria

Consequently, as regards the first two classes, we must, if possible, take refuge in some dissimilarity between the two cases, and two cases are scarcely ever alike in all their details. If, however, such a course is impossible and the case is the same as that on which the previous decision was given, we must complain of the negligence shown in the conduct of the previous case or of the weakness of the parties condemned, or of undue influence employed to corrupt the witnesses, or again of popular prejudice or ignorance which reacted unfavourably against our client; or else we must consider what has occurred since to alter the aspect of the case.