The Orations of Marcus Tullius Cicero, Volume 4

by Marcus Tullius Cicero

XXXIII But because it will not appear to some people to have been explained with sufficient clearness, unless we submit some instance taken from the civil class of causes, it seems desirable to employ some example of this sort, not because the rules to be laid down differ, or because it is expedient to employ such differently in this sort of discussion from what we should in ordinary discourse, but in order to satisfy the desire of those men, who, though they may have seen something in one place, are unable to recognise it in another unless it be proved. Therefore in this cause which is very notorious among the Greeks, that of Epaminondas, the general of the Thebans, who did not give up his army to the magistrate who succeeded him in due course of law, and when he himself had retained his army a few days contrary to law, he utterly defeated the Lacedaemonians, the accuser might employ an argumentation by means of induction, while defending the letter of the law in opposition to its spirit, in this way:—

"If, O judges, the framer of the law had added to his law what Epaminondas says that he intended, and had subjoined the exception 'except where any one has omitted to deliver up his army for the advantage of the republic,' would you have endured it? I think not. And if you yourselves, (though, such a proceeding is very far from your religious habits and from your wisdom,) for the sake of doing honour to this man, were to order the same exception to be subjoined to the law, would the Theban people endure that such a thing should be done? Beyond all question it would not endure it. Can it possibly then appear to you that that which would be scandalous if it were added to a law, should be proper to be done just as if it had been added to the law? I know your acuteness well; it cannot seem so to you, O judges. But if the intention of the framer of the law cannot be altered as to its expressions either by him or by you, then beware lest it should be a much more scandalous thing that that should be altered in fact, and by your decision, which cannot be altered in one single word."

And we seem now to have said enough for the present respecting induction. Next, let us consider the power and nature of ratiocination.

XXXIV. Ratiocination is a sort of speaking, eliciting something probable from the fact under consideration itself, which being explained and known of itself, confirms itself by its own power and principles.

Those who have thought it profitable to pay diligent attention to this kind of reasoning, have differed a little in the manner in which they have laid down rules, though they were aiming at the same end as far as the practice of speaking went. For some of them have said that there are five divisions of it, and some have thought that it had no more parts than could be arranged under three divisions. And it would seem not useless to explain the dispute which exists between these parties, with the reasons which each allege for it; for it is a short one, and not such that either party appears to be talking nonsense. And this topic also appears to us to be one that it is not at all right to omit in speaking.

Those who think that it ought to be arranged in five divisions, say that first of all it is desirable to explain the sum of the discussion, in this way:—Those things are better managed which are done on some deliberate plan, than those which are conducted without any steady design. This they call the first division. And then they think it right that it should be further proved by various arguments, and by as copious statements as possible; in this way:—"That house which is governed by reason is better appointed in all things, and more completely furnished, than that which is conducted at random, and on no settled plan;—that army which is commanded by a wise and skilful general, is governed more suitably in all particulars than that which is managed by the folly and rashness of any one. The same principle prevails with respect to sailing; for that ship performs its voyage best which has the most experienced pilot."

When the proposition has been proved in this manner, and when two parts of the ratiocination have proceeded, they say in the third part, that it is desirable to assume, from the mere intrinsic force of the proposition, what you wish to prove; in this way:—"But none of all those things is managed better than the entire world." In the fourth division they adduce besides another argument in proof of this assumption, in this manner:—"For both the rising and setting of the stars preserve some definite order, and their annual commutations do not only always take place in the same manner by some express necessity, but they are also adapted to the service of everything, and their daily and nightly changes have never injured anything in any particular from being altered capriciously." And all these things are a token that the nature of the world has been arranged by no ordinary wisdom. In the fifth division they bring forward that sort of statement, which either adduces that sort of fact alone which is compelled in every possible manner, in this way:—"The world, therefore, is governed on some settled plan;" or else, when it has briefly united both the proposition and the assumption, it adds this which is derived from both of them together, in this way:—"But if those things are managed better which are conducted on a settled plan, than those which are conducted without such settled plan; and if nothing whatever is managed better than the entire world; therefore it follows that the world is managed on a settled plan." And in this way they think that such argumentation has five divisions.

XXXV. But those who affirm that it has only three divisions, do not think that the argumentation ought to be conducted in any other way, but they find fault with this arrangement of the divisions. For they say that neither the proposition nor the assumption ought to be separated from their proofs; and that a proposition does not appear to be complete, nor an assumption perfect, which is not corroborated by proof. Therefore, they say that what those other men divide into two parts, proposition and proof, appears to them one part only, namely proposition. For if it be not proved, the proposition has no business to make part of the argumentation. In the same way they say that that which those other men call the assumption, and the proof of the assumption, appears to them to be assumption only. And the result is, that the whole argumentation being treated in the same way, appears to some susceptible of five divisions, and to others of only three; so that the difference does not so much affect the practice of speaking, as the principles on which the rules are to be laid down.

But to us that arrangement appears to be more convenient which divides it under five heads; and that is the one which all those who come from the school of Aristotle, or of Theophrastus, have chiefly followed. For as it is chiefly Socrates and the disciples of Socrates who have employed that former sort of argumentation which goes on induction, so this which is wrought up by ratiocination has been exceedingly practised by Aristotle, and the Peripatetics, and Theophrastus; and after them by those rhetoricians who are accounted the most elegant and the most skilful. And it seems desirable to explain why that arrangement is more approved of by us, that we may not appear to have adopted it capriciously; at the same time we must be brief in the explanation, that we may not appear to dwell on such subjects longer than the general manner of laying down rules requires.

XXXVI. If in any sort of argumentation it is sufficient to use a proposition by itself, and if it is not requisite to add proof to the proposition; but if in any sort of argumentation a proposition is of no power unless proof be added to it; then proof is something distinct from the proposition. For that which can be joined to a thing or separated from it, cannot possibly be the same thing with that to which it is joined or from which it is separated. But there is a certain kind of argumentation in which the proposition does not require confirmatory proof, and also another kind in which it is of no use at all without such proof, as we shall show. Proof, then, is a thing different from a proposition. And we will demonstrate that point which we have promised to show in this way:—The proposition which contains in itself something manifest, because it is unavoidable that that should be admitted by all men, has no necessity for our desiring to prove and corroborate it.