Institutio Oratoria

Consequently arguments are drawn from the causes of past or future actions. The matter of these causes, by some called ὕλη, by others δύναμις, falls into two genera, which are each divided into four species. For the motive for any action is as a rule concerned with the acquisition, increase, preservation and use of things that are good or with the avoidance, diminution, endurance of things that are evil or with escape there from. All these considerations carry great weight in deliberative oratory as well.

But right actions have right motives, while evil actions are the result of false opinions, which originate in the things which men believe to be good or evil. Hence spring errors and evil passions such as anger, hatred, envy, desire, hope, ambition, audacity, fear and others of a similar kind. To these accidental circumstances may often be added, such as drunkenness or ignorance, which serve sometimes to excuse and sometimes to prove a charge, as for instance when a man is said to have killed one person while lying in wait for another. Further,

motives are often discussed not merely to convict the accused of the offence with which he is charged, but also to defend him when he contends

Questions of definition are also at times intimately connected with motives. Is a man a tyrannicide if he kills a tyrant by whom he has been detected in the act of adultery? Or is lie guilty of sacrilege who tore down arms dedicated in a temple to enable him to drive the enemy from the city?

Arguments are also drawn from place. With a view to proving our facts we consider such questions as whether a place is hilly or level, near the coast or inland, planted or uncultivated, crowded or deserted, near or far, suitable for carrying out a given design or the reverse. This is a topic which is treated most carefully by Cicero in his pro Milone. [*](pro Mil. xx. )

These points and the like generally refer to questions of fact, but occasionally to questions of law as well. For we may ask whether a place is public or private, sacred or profane, our own or another's, just as where persons are concerned we ask whether a man is a magistrate, a father, a foreigner.

Hence arise such questions as the following.

You have stolen private money, but since you stole it from a temple, it is not theft but sacrilege.

You have killed adulterers, an act permitted by law, but since the act was done in a brothel, it is murder.

Similarly it may be urged in defence,

The act was lawful, because I was a father, a magistrate.

Further arguments drawn from place may serve to secure approval or the reverse. Ajax for instance in Ovid [*](Met. xiii. 5. Ajax had saved the ships from being burned by the Trojans. The dispute as to whether the arms of Achilles should be awarded to him or to Ulysses is being tried there. Ajax's argument is, Can you refuse me my due reward on the very spot where I saved you from disaster? ) says:—

1. What! do we plead our cause before the ships?
2. And is Ulysses there preferred to me?