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.

As the enemy had now no army in a condition to fight in the open field, the war could only be carried on by attacking their cities, and the sack of those which they captured would enrich the soldiers, whilst the enemy, compelled to fight for their hearths and homes, would gradually become exhausted.