Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Further in the elementary stages of such instruction it will not be unprofitable to show the different meanings which may be given to each word. With regard to glossemala, that is to say words not in common use, the teacher must exercise no ordinary diligence,