Book 5
6.4
On the other hand the man who proposes to put his opponent on oath appears to act with moderation, since he is making his adversary a judge in his own case, while he frees the actual judge from the burden of coming to a decision, since the latter would assuredly prefer to rest on another man's oath than on his own.
6.5
This fact makes the refusal to take an oath all the more difficult, unless indeed the affair in question be of such a nature that it cannot be supposed that the facts are known to the person asked to take the oath. Failing this excuse, there is only one course open to him: he must say that his opponent is trying to excite a prejudice against him and is endeavouring to give the impression that he has real ground for complaint though he is not in a position to win his case; consequently, though a dishonest man would eagerly have availed himself of the proposal, he prefers to prove the truth of his statements rather than leave a doubt in anyone's mind as to whether he has committed perjury or no.