... of a prosecution. It is both a shield and a weapon; you can use it alike for defence and attack, either before a judge, before the senate, or before the emperor. What but his eloquence did Eprius Marcellus oppose the other day to the senators in their fury? Armed with this, and consequently terrible, he baffled the sagacious but untrained wisdom of Helvidius Priscus, which knew nothing of such encou...