The Roman History of Ammianus Marcellinus

After the events of an expedition full of almost insuperable difficulties, while the spirits of all parties in the state, broken by the variety of their dangers and toils, were still enfeebled; while the clang of trumpets was ringing in men's ears, and the troops were still distributed in their winter quarters, the storms of angry fortune surrounded the commonwealth with fresh dangers through the manifold and terrible atrocities of C sar Gallus: who, when just entering into the prime of life, having been raised with unexpected honour from the lowest depth of misery to the highest rank, exceeded all the legitimate bounds of the power conferred on him, and with preposterous violence threw everything into confusion. For by his near relationship to the royal family, and his connection with the name of Constantine, he was so inflated with pride, that if he had had more power, he would, as it seemed, have ventured to attack even the author of his prosperity.