Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
They make the gravest mistake who consider that the style which is best adapted to win popularity and applause is a faulty and corrupt style of speaking which revels in license of diction or wantons in childish epigram or swells with stilted bombast or riots in empty commonplace or adorns itself with blossoms of eloquence which will fall to earth if but lightly shaken, or regards extravagance as sublime or raves wildly under the pretext of free speech.