Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Further the resemblance between the two is so close that it is not easy to distinguish between them. For although certain kinds differ, while retaining a general resemblance (since both involve a departure from the simple and straightforward method of expression coupled with a certain rhetorical excellence), on the other hand some are distinguished by the narrowest possible dividing line: for example, while irony belongs to figures of thought just as much as to tropes, [*](See IX. ii. 44.) periphrasis, hyperbaton and onomatopoea [*]( VIII. vi. 59 sqq., 62, 31 respectively. ) have been ranked by distinguished authors as figures of speech rather than tropes.
It is therefore all the more necessary to point out the distinction between the two. The name of trope
Therefore the substitution of one word for another is placed among tropes, as for example in the case of metaphor, metonymy, antonomasia, metalepsis, synecdochè, catachresis, allegory [*](See VIII. vi.) and, as a rule, hyperbole, which may, of course, be concerned either with words or things. Onomatopoea is the creation of a word and therefore involves substitution for the words which we should use but for such creation.
Again although periphrasis often includes the actual word whose place it supplies, it still uses a number of words in place of one. The epithet as a rule involves an element of antonomasia [*](VIII. vi. 29 and 46.) and consequently becomes a trope on account of this affinity. Hyperbaton is a change of order and for this reason many exclude it from tropes. None the less it transfers a word or part of a word from its own place to another.
None of these can be called figures. For a figure does not necessarily involve any alteration either of the order or the strict sense of words. As regards irony, I shall show elsewhere [*](IX. ii. 44.) how in some of its forms it is a trope, in others a figure. For I admit that the name is common to both and am aware of the complicated and minute discussions to which it has given rise. They, however, have no bearing on my present task. For it
even though they adopt a new name, so these artifices will produce exactly the same effect, whether they are styled tropes or figures, since their values lie not in their names, but in their effect. Similarly it makes no difference whether we call a basis conjectural or negative, or concerned with fact or substance, [*](See III. vi. 15, 39.) provided always that we know that the subject of enquiry is the same.
It is best therefore in dealing with these topics to adopt the generally accepted terms and to understand the actual thing, by whatever name it is called. But we must note the fact that trope and figure are often combined in the expression of the same thought, since figures are introduced just as much by the metaphorical as by the literal use of words.