Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Consider the following example: neminem vestrum ignorare arbitror, iudices, hunc per hosce dies sermonem vulgi atque hanc opinionem populi Romani fiisse. [*](Verr. I. i. 1. I think that none of you, gentlemen, are igroraint that during these days such has been the talk of the common folk and such the opinion of the Roman people. ) Why is hosce preferable to hos, although the latter presents no harshness? I am not sure that I can give the reason, but none the less I feel that hosce is better. Why is it not enough to say sermonem vulgifuisse, which would have satisfied the bare demands of rhythm? I cannot tell, and yet my ear tells me that the rhythm would have lacked fullness without the reduplication of the phrase.
The answer is that in such cases we must rely on feeling. It is possible to have an inadequate understanding of what it is precisely that makes for severity or charm, but yet to produce the required effect better by taking nature for our guide in place of art: none the less there will always be some principle of art underlying the promptings of nature.