What, then, are the opportunities which wisdom has of distinguishing itself? When can a foolish and credulous auditor be distinguished from a scrupulous and discerning judge? When, forsooth, the statements which are made by the witnesses are committed to his conjectures, to his opinion, as to the authority, the impartiality of mind, the modesty; the good faith, the scrupulousness, the regard for a fair reputation, the care, and the fear with which they are made. Or will you, in the case of the testimonies of barbarians, hesitate to do what very often within our recollection and that of our fathers, the wisest judges have not thought that they ought to hesitate to do with respect to the most illustrious men of our state? For they refused belief to the evidence of Cnaeus and Quintus Caepio, and to Lucius and Quintus Metellus, when they were witnesses against Quintus Pompeius, a new man; for virtuous, and noble, and valiant as they were, still the suspicion of some private object to be gamed, and some private grudge to be gratified, detracted from their credibility and authority as witnesses.