Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
He does not, however, conceal the fact that some regard these as rhythms rather than feet: and they are right in so doing, since whatever is longer than three syllables involves more than one foot. Since then there are four feet which consist of two syllables, and eight composed of three, I shall call them by the following names: two long syllables make a spondee; the pyrrhic or pariambus, as some call it, is composed of two shorts; the iambus of a short followed by a long; its opposite, that is a long followed by a short, is a choreus, for I prefer that term to the name of trochee which is given it by others.
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