We must also ensure that it is free alike from omissions and from redundance. Redundance as a rule occurs through our dividing into species when it would be sufficient to divide into genera, or through the addition of species after stating the genus. The following will serve as an example: I will speak of virtue, justice and abstinence. But justice and abstinence are species of tile genus virtue.

Our first partition will be between admitted and disputed facts. Admitted facts will then be divided into those acknowledged by our opponent and those acknowledged by ourselves. Disputed facts will be divided into those which we and those which our opponents allege. But the worst fault of all is to treat your points in an order different from that which was assigned them in your proposition.

Book V

There have been certain writers of no small authority cp. Ar. Rhet. i. 4 Also Quint. IV. v. 6. who have held that the sole duty of the orator was to instruct: in their view appeals to the emotions were to be excluded for two reasons, first on the ground that all disturbance of the mind was a fault, and secondly that it was wrong to distract the judge from the truth by exciting his pity, bringing influence to bear, and the like. Further, to seek to charm the audience, when the aim of the orator was merely to win success, was in their opinion not only superfluous for a pleader, but hardly worthy of a self-respecting man.

The majority however, while admitting that such arts undoubtedly formed part of oratory, held that its special and peculiar task is to make good the case which it maintains and refute that of its opponent.

Whichever of these views is correct (for at this point I do not propose to express my own opinion), they will regard this book as serving a very necessary purpose, since it will deal entirely with the points on which they lay such stress, although all that I have already said on the subject of judicial causes is subservient to the same end.