Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Finally there was actually a proverb among the Greeks,
v1-3 p.171
that the uneducated were far from the company of the Muses and Graces.