Attributed by Tacitus in Agricola (c. 98)
Auferre, trucidare, rapere, falsis nominibus imperium; atque, ubi solitudinem faciunt, pacem appellant.
Notes from Wikiquote
Translation: They plunder, they slaughter, and they steal: this they falsely name Empire, and where they make a wasteland, they call it peace. — translation Loeb Classical Library edition | Translation: To plunder, butcher, steal, these things they misname empire: they make a desolation and they call it peace. — translation by William Peterson