Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
As a matter of fact, he was the object of many genuine plots of traitors, such as Aureolus, Postumus, Ingenuus, Valens[*](In Illyricum, Gaul, Pannonia and Achaia respectively.) surnamed Thessalonicus, and several others, yet he often showed leniency in punishing crimes which would bring death to the victim; but he also tried to make false or doubtful cases appear well-founded by excessively violent tortures.
And in such affairs he showed deadly enmity to justice, although he made a special effort to be considered just and merciful. And as sparks flying from a dry forest even with a light breeze of wind come with irresistible course and bring danger to rural villages, so he also from trivial causes roused
And, as some right- thinking men believed, it would have been a striking indication of true worth in Constantius, if he had renounced his power without bloodshed, rather than defended it so mercilessly.