Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

But since these witnesses are sometimes so artful that their first replies are designed to meet the wishes of the questioner, in order to win all the greater credit when subsequently they answer in a very different way, it will be the duty of the advocate to dismiss

v4-6 p.181

a suspect witness while he can still do so with advantage.