Book 3
5.14
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.
5.15
This type of oratory seems to me to offer a more varied field for eloquence, since both those who ask for advice and the answers given to them may easily present the greatest diversity. Consequently there are three points which must be specially borne in mind in advice or dissuasion: first the nature of the subject under discussion, secondly the nature of those who are engaged in the discussion, and thirdly the nature of the speaker who offers them advice.