Book 8
6.59
To these the Greeks add μυκτηρισμός or mockery under the thinnest of disguises. When we use a number of words to describe something for which one, or at any rate only a few words of description would suffice, it is called periphrasis, that is, a circuitous mode of speech. It is sometimes necessary, being of special service when it conceals something which would be indecent, if expressed in so many words: compare the phrase To meet the demands of nature from Sallust. Presumably from the Histories.
6.60
But at times it is employed solely for decorative effect, a practice most frequent among the poets: Now was the time When the first sleep to weary mortals comes Stealing its way, the sweetest boon of heaven. Aen. ii. 268.
6.61
Still it is far from uncommon even in oratory, though in such cases it is always used with greater restraint. For whatever might have been expressed with greater brevity, but is expanded for purposes of ornament, is a periphrasis, to which we give the name circumlocution, though it is a term scarcely suitable to describe one of the virtues of oratory. But it is only called periphrasis so long as it produces a decorative effect: when it passes into excess, it is known as perissology: for whatever is not a help, is a positive hindrance.
