The Roman History · Amm. 26.1.11

And after much consideration it has been so arranged with the concurrence of many learned men, that thus the revolutions of the year may come to one regular end, removed from all vagueness and uncertainty, so that the theory of the heavens may not be clouded by any error, and that the months may retain their appointed position.

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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