The Roman History · Amm. 23.5.13

When this was seen, the interpreters of such things were sent for and questioned, and they with increased boldness affirmed that this event forbade the campaign, demonstrating it to be a monitory lightning (for this term is applied to signs which advise or discourage any line of action). And this, as they said, was to be the more guarded against, because it had killed a soldier of rank, with war-horses; and the books which explain lightnings pronounce that places struck in this manner should not be trodden on, nor even looked upon.

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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