XIII. C. F. Since I know now whence arguments can be derived which have a tendency to create belief, I am waiting to hear how they are severally to be handled in speaking.

C. P. You seem to be inquiring about argumentation, and as to how to develop arguments.

C. F. That is the very thing that I want to know.

C. P. The development, then, of an argument is argumentation; and that is when you assume things which are either certain or at least probable, from which to derive a conclusion, which taken by itself is doubtful, or at all events not very probable. But there are two kinds of arguing, one of which aims directly at creating belief, the other principally looks to exciting such and such feelings. It goes straight on when it has proposed to itself something to prove, and assumed grounds on which it may depend; and when these have been established, it comes back to its original proposition, and concludes. But the other kind of argumentation, proceeding as it were backwards and in an inverse way, first of all assumes what it chooses, and confirms it; and then, having excited the minds of the hearers, it throws on to the end that which was its original object. But there is this variety, and a distinction which is not disagreeable in arguing, as when we ask something ourselves, or put questions, or express some command, or some wish, as all these figures are a kind of embellishment to an oration. But we shall be able to avoid too much sameness, if we do not always begin with the proposition which we desire to establish, and if we do not confirm each separate point by dwelling on it separately, and if we are at times very brief in our explanation of what is sufficiently clear, and if we do not consider it at all times necessary to sum up and enumerate what results from these premises when it is sufficiently clear.

XIV. C. F. What comes next? Is there any way or any respect in which those things which are said to be devoid of art, and which you said just now were accessories to the main argument, require art?

C. P. Indeed they do. Nor are they called devoid of art because they really are so, but because it is not the art of the orator which produces them, but they are brought to him from abroad, as it were, and then he deals with them artistically; and this is especially the case as to witnesses. For it is often necessary to speak of the whole class of witnesses, and to show how weak it is; and to urge that arguments refer to facts, testimony to inclination; and one must have recourse to precedents of cases where witnesses were not believed; and with respect to individual witnesses, if they are by nature vain, trifling, discreditable, or if they have been influenced by hope, by fear, by anger, by pity, by bribery, by interest; and they must be compared with the authority of the witnesses in the case cited, where the witnesses were not believed. Often, also, one must resist examinations under torture, because many men, out of a desire to avoid pain, have often told lies under torture; and have preferred dying while confessing a falsehood to suffering pain while persisting in their denial. Many men, also, have been indifferent to the preservation of their own life, as long as they could save those who were dearer to them than they were to themselves; others, owing to the nature of their bodies, or to their being accustomed to pain, or because they feared punishment and execution, have endured the violence of torture; others, also, have told lies against those whom they hated. And all these arguments are to be fortified by instances. Nor is it at all uncertain that (since there are instances on both sides of a question, and topics also for forming conjectures on both sides) contrary arguments must be used in contrary cases. There is, also, another method of disparaging witnesses, and examinations under torture; for often those answers which have been given may be attacked very cleverly, if they have been expressed rather ambiguously or inconsistently, or with any incredible circumstances; or in different ways by different witnesses.

XV. C. F. The end of the oration remains to be spoken of by you; and that is included in the peroration, which I wish to hear you explain?

C. P. The explanation of the peroration is easy; for it is divided into two parts, amplification and enumeration. And the proper place for amplification is in the peroration, and also in the course of the oration there are opportunities of digressing for the purpose of amplification, by corroborating or refuting something which has been previously said. Amplification, then, is a kind of graver affirmation, which by exciting feelings in the mind conciliates belief to one's assertion. It is produced by the kind of words used, and by the facts dwelt upon. Expressions are to be used which have a power of illustrating the oration; yet such as are not unusual, but weighty, full-sounding, sonorous, compound, well-invented, and well-applied, not vulgar; borrowed from other subjects, and often metaphorical, not consisting of single words, but dissolved into several clauses, which are uttered without any conjunction between them, so as to appear more numerous. Amplification is also obtained by repetition, by iteration, by redoubling words, and by gradually rising from lower to loftier language; and it must be altogether a natural and lively sort of speech, made up of dignified language, well suited to give a high idea of the subject spoken of. This then is amplification as far as language goes. To the language there must be adapted expression of tone, of countenance, and gesture, all in harmony together and calculated to rouse the feelings of the hearers. But the cause must be maintained both by language and action, and carried on according to circumstances. For, because these appear very absurd when they are more vehement than the subject will bear, we must diligently consider what is becoming to each separate speaker, and in each separate case.

XVI. The amplification of facts is derived from all the same topics as those arguments which are adduced to create belief. And above all things, a number of accumulated definitions carries weight with it, and a repeated assertion of consequents, and a comparison of contrary and dissimilar facts, and of inconsistent circumstances. Causes too, and those things which arise from causes, and especially similarities and instances, are efficacious; so also are imaginary characters. Lastly, mute things may be introduced as speaking, and altogether all things are to be employed (if the cause will allow of them) which are considered important; and important things are divisible into two classes. For there are some things which seem important by nature, and some by use. By nature, as heavenly and divine things, and those things the causes of which are obscure, as those things which are wonderful on the earth and in the world, from which and from things resembling which, if you only take care, you will be able to draw many arguments for amplifying the dignity of the cause which you are advocating. By use; which appear to be of exceeding benefit or exceeding injury to men; and of these there are three kinds suitable for amplification.

For men are either moved by affection, for instance, by affections for the gods, for their country, or for their parents; or by love, as for their wives, their brothers, their children, or their friends; or by honourableness, as by that of the virtues, and especially of those virtues which tend to promote sociability among men, and liberality. From them exhortations are derived to maintain them; and hatred is excited against, and commiseration awakened for those by whom they are violated.