Ab urbe condita

Titus Livius (Livy)

Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.

This, out of all foreign rites, was the only one which Romulus adopted, as though he felt that an immortality won through courage, of which this was the memorial, would one day be his own reward.