Institutio Oratoria

Others hold that there are six bases: conjecture or γένεσις, quality, particularity or ἰδιότης by which word they mean definition, quantity or ἀξία, comparison and competence, for which a new term has been found in μετάστασις I call it new when applied to a basis, for Hermagoras employs it to describe a species of juridical question.

Others think there are seven, while refusing to recognise competence, quantity or comparison, in place of which they substitute four legal bases, [*](See § 46.) completing the seven by the addition of those three which they call rational. [*](Conjectural, definitive, qualitative.)