Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

Still it is in the nature of things conceivable that just causes may lead two wise men to take different sides, since it is held that wise men may fight among themselves, provided that they do so at the bidding of reason. I will therefore reply to their criticisms in such a way that it will be clear that these arguments have no force even against those who concede the name of orator to persons of bad character. For rhetoric is not self-contradictory.

The conflict is

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between case and case, not between rhetoric and itself. And even if persons who have learned the same thing fight one another, that does not prove that what they have learned is not an art. Were that so, there could be no art of arms, since gladiators trained under the same master are often matched against each other;

nor would the pilot's art exist, because in sea-fights pilots may be found on different sides; nor yet could there be an art of generalship, since general is pitted against general. In the same way rhetoric does not undo its own work. For the orator does not refute his own arguments, nor does rhetoric even do so, because those who regard persuasion as its end, or the two good men whom chance has matched against one another seek merely for probabilities: and the fact that one thing is more credible than another, does not involve contradiction between the two.

There is no absolute antagonism between the probable and the more probable, just as there is none between that which is white and that which is whiter, or between that which is sweet and that which is sweeter. Nor does rhetoric ever teach that which ought not to be said, or that which is contrary to what ought to be said, but solely what ought to be said in each individual case.

But though the orator will as a rule maintain what is true, this will not always be the case: there are occasions when the public interest demands that he should defend what is untrue. The following objections are also put forward in the second book of Cicero's de Oratore: [*](II. vii. 30.) —

Art deals with things that are known. But the pleading of an orator is based entirely on opinion, not on knowledge, because he speaks to an audience who do not know,
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and sometimes himself states things of which he has no actual knowledge.

Now one of these points, namely whether the judges have knowledge of what is being said to them, has nothing to do with the art of oratory. The other statement, that art is concerned with things that are known, does however require an answer. Rhetoric is the art of speaking well and the orator knows how to speak well.

But,

it is urged,

he does not know whether what he says is true.

Neither do they, who assert that all things derive their origin from fire or water or the four elements or indivisible atoms; nor they who calculate the distances of the stars or the size of the earth and sun. And yet all these call the subject which they teach an art. But if reason makes them seem not merely to hold opinions but, thanks to the cogency of the proofs adduced, to have actual knowledge, reason will do the same service to the orator.

But,

they say,

he does not know whether the cause which he has undertaken is true.

But not even a doctor can tell whether a patient who claims to be suffering from a headache, really is so suffering: but he will treat him on the assumption that his statement is true, and medicine will still be an art. Again what of the fact that rhetoric does not always aim at telling the truth, but always at stating what is probable? The answer is that the orator knows that what he states is no more than probable.

My opponents further object that advocates often defend in one case what they have attacked in another. This is not the fault of the art, but of the man. Such are the main points that are urged against rhetoric; there are others as well, but they are of minor importance and drawn from the same sources.

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That rhetoric is an art may, however,

be proved in a very few words. For if Cleanthes [*](Fr. 790.) definition be accepted that

Art is a power reaching its ends by a definite path, that is, by ordered methods,

no one can doubt that there is such method and order in good speaking: while if, on the other hand, we accept the definition which meets with almost universal approval that art consists in perceptions agreeing and cooperating to the achievement of some useful end, we shall be able to show that rhetoric lacks none of these characteristics.