Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Has not oratory often revived the courage of a panic-stricken army and persuaded the soldier faced by all the perils of war that glory is a fairer thing than life itself? Nor shall the history of Sparta and Athens move me more than that of the Roman people, who have always held the orator in highest honour.
Never in my opinion would the founders of cities have induced their unsettled multitudes to form communities had they not moved them by the magic of their eloquence: never without the highest gifts of oratory
Nay, even the principles which should guide our life, however fair they may be by nature, yet have greater power to mould the mind to virtue, when the beauty of things is illumined by the splendour of eloquence. Wherefore, although the weapons of oratory may be used either for good or ill, it is unfair to regard that as an evil which can be employed for good.