Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Here, however,
In specifying the feet above-mentioned, I do not mean to lay it down as an absolute law that no others can be used, but merely wish to indicate the usual practice and the principles that are best suited for present needs. I may add that two consecutive anapaests should be avoided, since they form the conclusion of a pentameter or reproduce the rhythm of the anapaestic metre, as in the passage, nam ubi libido dominatur, innocentiae leve praesidinun est, [*]( Crassus in Cic. Or. lxv. 219. For where lust holds sway, there is but small protection for innocence. ) where elision makes the last two syllables sound as one.
The anapaest should preferably be preceded by a spondee or a bacchius, as, for instance, if you alter the order of words in the passage just quoted to leve innocentiae praesidium est. Personally, although I know that in this I am in disagreement with great writers, I am not attracted by the paean consisting of three shorts followed by a long: for it is no more than an anapaest with the addition of another short syllable (e.g. facilitas, agilitas ). Why it should have been so popular, I cannot see, unless it be that those who gave it their approval were students of the language of common life rather than of oratory. It is preferably preceded by short syllables,
such as are provided by the pyrrhic or the choreus (e.g.
My purpose in discussing this topic at length is not to lead the orator to enfeeble his style by pedantic measurement of feet and weighing of syllables: for oratory should possess a vigorous flow, and such solicitude is worthy only of a wretched pedant, absorbed in trivial detail: