Institutio Oratoria

While the battle still rages, the task of luring on our adversary when he has once committed himself to error, and of forcing him to commit himself as deeply as possible, even to the extent at times of being puffed up with extravagant hopes of success, requires great prudence and skill. It is, therefore, wise to conceal some of our weapons: for our opponents will often press their attack and stake everything on some imagined weakness of our own, and will give fresh weight to our proofs by the instancy with which they demand us to produce them.

It may even be expedient to yield ground which the enemy thinks advantageous to himself: for in grasping at the fancied advantage he may be forced to surrender some greater advantage: at times, too, it may serve our purpose to give him a choice between two alternatives, neither of which

the mark of a shrewd debater to perceive what remarks impress the judge and what he rejects: this may often be detected from his looks, and sometimes from some action or utterance. Arguments which help us must be pressed home, while it will be wise to withdraw as gently as possible from such as are of no service. We may take a lesson from doctors who continue or cease to administer remedies according as they note that they are received or rejected by the stomach. Sometimes,

if we find difficulty in developing our point, it is desirable to raise another question and to divert the attention of the judge to it if this be feasible. For what can you do, if you are unable to answer an argument, save invent another to which your opponent can give no answer?