Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Among orators of the intermediate type we may rank Lucius Crassus and Quintus Hortensius. Then let us turn to a vast harvest of orators who flourished much about the same period. It is here that we find the vigour of Caesar, the natural talent of Caelius, the subtlety of Calidius, the accuracy of Pollio, the dignity of Messala, the austerity of Calvus, the gravity of Brutus, the acumen of Sulpicius and the bitterness of Cassius, while among those whom we have seen ourselves we admire the fluency of Seneca, the strength of Africanus, the mellowness of Afer, the charm of Crispus, the sonority of Trachalus and the elegance of Secundus.