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 makes it even clearer that the complete attainment of this art is impossible without the knowledge of justice, an opinion in which I heartily concur. Had this not been his view, would he have ever written the Apology of Socrates or the Funeral Oration [*](Menexenus.) in praise of those who had died in battle for their country, both of them works falling within the sphere of oratory.
It was against the class of men who employed their glibness of speech for evil purposes that he directed his denunciations. Similarly Socrates thought it incompatible with his honour to