Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
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.
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.
Again it is scarcely necessary for me to point out that like other arts it is based on examination and practice. And if logic is an art, as is generally agreed, rhetoric must also be an art, since it differs from logic in species rather than in genus. Nor must I omit to point out that where it is possible in any given subject for one man to act without art and another with art, there must necessarily be an art in connexion with that subject, as there must also be in any subject in which the man who has received instruction is the superior of him who has not.