The Roman History · Amm. 21.16.15

But as in his foreign wars this emperor was unsuccessful and unfortunate, on the other hand in his civil contests he was successful; and in all those domestic calamities he covered himself with the horrid blood of the enemies of the republic and of himself; and yielding to his elation at these triumphs in a way neither right nor usual, he erected at a vast expense triumphal arches in Gaul and the two Pannonias, to record his triumphs over his own provinces; engraving on them the titles of his exploits ... as long as they should last, to those who read the inscriptions.

Ammianus Marcellinus · translated by C. D. Yonge · 1911 reprint
C. D. Yonge translation (preface dated February 1862); G. Bell and Sons, 1911; Project Gutenberg #28587
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