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 nature has not doomed us to be dullards, but we have altered our style of oratory and indulged our caprices over much. It is in their ideals rather than their talents that the ancients show themselves our superiors. It will therefore be possible to select much that is valuable from modern writers, but we must take care that the precious metal is not debased by the dross with which it is so closely intermingled.
Further I would not merely gladly admit, but would even contend that we have recently had and still have certain authors who deserve imitation in their entirety.
But it is not for everyone to decide who these writers are. Error in the choice of earlier authors is attended with less danger, and I have therefore postponed the study of the moderns, for fear that we should imitate them before we are qualified to judge of their merits.