Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
However, the fact that I have been somewhat late in making the discovery is not a reason why I should be ashamed to recommend it to those who come after me. I now know that this form of teaching is practised by the Greeks, but is generally entrusted to assistants, as the professors themselves consider that they have no time to give individual instruction to each pupil as he reads.
And I admit that the form of lecture which this requires, designed as it is to make boys follow the written word with ease and accuracy, and even that which aims at teaching the meaning of any rare words that may occur, are to be regarded as quite below the dignity of the teacher of rhetoric.