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.

If the Etruscans had the same spirit which Porsena and their ancestors once had there was no reason why they should not expel the Romans from the whole of their land as far as the Tiber and compel them to fight, not for their insupportable dominion over Italy, but for their very existence.