C. Julius Caesar, Gallic War

To this Ariovistus replied, that "the right of war was, that they who had conquered should govern those whom they had conquered, in what manner they pleased; that in that way the Roman people were wont to govern the nations which they had conquered, not according to the dictation of any other, but according to their own discretion. If he for his part did not dictate to the Roman people as to the manner in which they were to exercise their right, he ought not to be obstructed by the Roman people in his right; that the Aedui, inasmuch as they had tried the fortune of war and had engaged in arms and been conquered, had become tributaries to him; that Caesar was doing a great injustice, in that by his arrival he was making his revenues less valuable to him; that he should not restore their hostages to the Aedui, but should not make war wrongfully either upon them or their allies, if they abided by that which had been agreed on, and paid their tribute annually: if they did not continue to do that, the Roman people's name of 'brothers' would avail them naught. As to Caesar's threatening him, that he would not overlook the wrongs of the Aedui, [he said] that no one had ever entered into a contest with him [Ariovistus] without utter ruin to himself. That Caesar might enter the lists when he chose; he would feel what the invincible Germans, well-trained [as they were] beyond all others to arms, who for fourteen years had not been beneath a roof, could achieve by their valor."