Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
In most respects the rules to be observed in debate are, as I have said, [*](§2.) identical with those for the cross examination of witnesses, the only difference lying in the fact that the debate is a battle between advocates, whereas cross-examination is a fight between advocate and witness. To practise the art of debate is, however, far easier. For it is most profitable to agree with a fellow-student on some subject, real or fictitious, and to take different sides, debating it as would be done in the courts. The same may also be done with the simpler class of questions. [*](cp. II. i. 9 and v. x. 53. )
I would further have an advocate realise the order in