Institutio Oratoria

Quintilian

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

to go outside these physical speculations, whether the Trojan or the Peloponnesian war was the greatest, what was the nature of the shield of Achilles, or whether there was more than one Hercules. In forensic cases, however, which consist of accusation and defence, there is one kind of conjecture by which we enquire both about an act and about its author. This sometimes treats the two questions together, as, for example, when both the act and the identity of the author are denied, and sometimes separately, as when the first enquiry, whether the act was committed, is followed by a second, where, the act being admitted, the question is by whom it was committed.

The act itself again sometimes involves a single question, as, for example,

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whether a man is dead, and sometimes two, as, for instance, whether he died of poison or of some internal disease. Another form of conjecture is concerned with the act alone, it being admitted that if the act was really committed, there can be no doubt as to its author. A third form is concerned solely with the author, the act being admitted and the dispute turning on the question as to who committed it. This third form is complex.