The Roman History · Amm. 21.9.2

And when he had reached the spot at which he had been informed that the river was navigable, he embarked on board some boats which good fortune had brought thither in numbers, and passed as secretly as he could down the stream, escaping notice the more because his habits of endurance and fortitude had made him indifferent to delicate food; so that, being contented with meagre and poor fare, he did not care to approach their towns or camps, forming his conduct in this respect according to the celebrated saying of the ancient Cyrus, who, when he was introduced to a host who asked him what he wished to have got ready for supper, answered, "Nothing beyond bread, for that he hoped he should sup by the side of a river."

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
Passage preview. Read in context for the complete text, notes and references.