The Roman History · Amm. 17.5.2

And he, suspecting that Constantius would never have done so if the empire had not been weakened all over, raised his own pretensions, and embracing the name indeed of peace, offered very unwelcome conditions. And having sent a man of the name of Narses as ambassador with many presents, he gave him letters to Constantius, in which he in no respect abated of his natural pride. The purport of these letters we have understood to be this:—

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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