Institutio Oratoria

This concludes my general rules on this subject. We will now proceed to consider the several parts of forensic cases, and although I cannot follow them to the ultimate species, [*](cp. VI. i. 23. ) that is to say, I cannot deal with individual suits and controversies, I shall be able to discuss them on general lines in such a way as to show what bases most of them involve. And since the first question naturally is whether an alleged fact has taken place, I will begin with this.

All conjecture is concerned either with facts or intention. Each of these may occur in one of three times, past, present or future. Questions concerning facts are either general or definite, that is to say, those which involve consideration of persons and those which do not.

Concerning intentions there can be no questions which do not involve some person and where the facts of the case are not admitted. Therefore when the question turns on some fact, the point on which doubt arises is either what has been done, or what is being done, or what is likely to be done. For example, in general questions we discuss whether the universe has been formed of a concourse of atoms, or is governed by

In the law courts past time is of most importance, since all accusations are concerned with what has actually been done, while what is being done or is likely to be done is inferred from the past. We also enquire into origins. For instance, we enquire whether a pestilence be due to the anger of heaven, the inclement weather, the pollution of the water-supply, or the noxious vapours emitted by the earth. Again, we seek for the motives of an act. For example, we enquire whether the fifty kings who sailed against Troy did so because they were bound by their oath, or were moved to do so by righteous indignation, or merely desired to gratify the sons of Atreus. There is no very great difference between these two classes of question.