M. Tullius Cicero Pro L. Murena 32

[32] And in that war the renown of your ancestor Marcus Cato was very conspicuous; but he, if he was, as I make no doubt that he was, a man of the same character as I see that you are, would never have gone to that war, if he had thought that it was only going to be a war against women. Nor would the senate have prevailed on Publius Africanus to go as lieutenant to his brother, when he himself; a little while before, having forced Hannibal out of Italy, having driven him out of Africa, and having crushed the power of Carthage, had delivered the republic from the greatest dangers, if that war had not been considered an important and formidable war.
  15 But if you diligently consider what the power of Mithridates was, and what his exploits were, and what sort or a man he was himself; you will in truth prefer this king to all the kings with whom the Roman people has ever waged war;—a man whom Lucius Sulla,—not a very inexperienced general, to say the least of it—at the head of a numerous and powerful army, after a severe battle, allowed to depart having made peace with him, though he had overrun all Asia with war: whom Lucius Murena, my client's father, after having warred against him with the greatest vigour and vigilance, left greatly checked indeed, but not overwhelmed: a king, who, having taken several years to perfect his system and to strengthen his warlike resources, became so powerful and enterprising that he thought himself able to unite the Atlantic to the Black Sea, and to combine the forces of Sertorius with his own.