Institutio Oratoria

Witnesses appearing in answer to a subpoena may be divided into two classes: those who desire to harm the accused, and those who do not. The accuser sometimes is aware of their disposition, sometimes unaware. For the moment let us assume that he is aware of their disposition, although I must point out that in either case the utmost skill is required in their examination.

For if an advocate is producing a witness who is desirous of harming the accused, he must avoid letting this desire become apparent, and must not at once proceed to question him on the point at issue. On the contrary this point must be approached by a circuitous route in such a manner as to make it seem that the statement which the witness is really desirous of making has been forced from him. Again lie should not press the witness too much, for fear he should impair his credit by the glibness with which lie answers every question, but should draw from him just so much as may seem reasonable to elicit from a single witness.

On the other hand in the case of a witness who is reluctant to tell the truth, the essential for successful examination is to extort the truth against his will This can only be done by putting questions which have all the appearance of irrelevance. If this he done, he will give replies which he

For just as in a set speech we usually collect detached arguments which in themselves seem innocuous to the accused, but taken together prove the case against him, so we must ask the reluctant witness a number of questions relative to acts antecedent or subsequent to the case, places, dates, persons, etcetera, with a view to luring him into some reply which will force him to make the admissions which we desire or to contradict his previous evidence.

If this fails, we must content ourselves with making it clear that he is reluctant to tell what he knows, and lead him with a view to tripping him up on some point or other, even though it be irrelevant to the case; we must also keep him in the witness-box for an unusual length of time, so that by saying everything that can be said and more than is necessary on behalf of the accused, he may be rendered suspect to the judge. Thus he will do the accused no less harm than if he had told the truth against him.