Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Upright character, however, and the blamelessness of his past life are always of the utmost assistance to the accused. If no charge is made against his character, counsel for the defence will lay great stress on this fact, while the accuser will attempt to restrict the judge to the sole consideration of the actual issue which the court has to decide, and will say that there must always be a first step in crime and that a first offence is not to be regarded as the occasion for celebrating a feast in honour of the defendant's character.
So much for the methods of reply which will be employed by the prosecution. But he will also in his opening speech endeavour to dispose the judges to believe that it is not so much that he is unable, as that he is unwilling to bring any charge against the character of the accused. Consequently it is better to abstain from casting any slur on the past life of the accused than to attack him with slight or frivolous charges which are manifestly false, since such a proceeding discredits the rest of our argument. Further, the advocate who brings