Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
As regards appeals to the emotions, these are especially necessary in deliberative oratory. Anger has frequently to be excited or assuaged and the minds of the audience have to be swayed to fear, ambition, hatred, reconciliation. At times again it is necessary to awaken pity, whether it is required, for instance, to urge that relief should be sent to a besieged city, or we are engaged in deploring the overthrow of an allied state. But what really carries greatest weight in deliberative speeches is the authority of the speaker.
For he, who would have all men trust his judgment as to what is expedient and honourable, should both possess and be regarded as possessing genuine wisdom and excellence of character. In forensic speeches the orator may, according to the generally received opinion, indulge his passion to some extent. But all will agree that the advice given by a speaker should be in keeping with his moral character.
Even Cicero [*](de Orat. ii. 82. ) himself deals chiefly with this department. Consequently those who propose to offer advice upon peace, war, troops, public works or revenue must thoroughly acquaint themselves with two things, the resources of the state and the character of its people, so that the method employed in tendering their advice may be based at once on political realities and the nature of their hearers.