Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
For I only wish they had equalled or at least approached his level. But he pleased them for his faults alone, and each individual sought to imitate such of those faults as lay within his capacity to reproduce: and then brought reproach on his master by boasting that he spoke in the genuine Senecan manner.
Seneca had many excellent qualities, a quick and fertile intelligence with great industry and wide knowledge, though as regards the last quality he was often led into error by those whom he had entrusted with the task of investigating certain subjects on his behalf.
He dealt with almost every department of knowledge; for speeches, poems, letters and dialogues all circulate under his name. In philosophy he showed a lack of critical power, but was none the less quite admirable in his denunciations of vice. His works contain a number of striking general reflexions and much that is worth reading for edification; but his style is for the most part corrupt and exceedingly dangerous, for the very reason that its vices are so many and attractive.