Plutarch, Caesar
Bernadotte Perrin, Ed.

15. Such, then, is said to have been the course of Caesar's life before his Gallic campaigns. But the period of the wars which he afterwards fought, and of the campaigns by which he subjugated Gaul, as if he had made another beginning and entered upon a different path of life and one of new achievements, proved him to be inferior as soldier and commander to no one soever of those who have won most admiration for leadership and shown themselves greatest therein. [2] Nay, if one compare him with such men as Fabius and Scipio and Metellus, and with the men of his own time or a little before him, like Sulla, Marius, the two Luculli, or even Pompey himself, whose fame for every sort of military excellence was at this time flowering out and reaching to the skies, Caesar will be found to surpass them all in his achievements. One he surpassed in the difficulty of the regions where he waged his wars; another in the great extent of country which he acquired; another in the multitude and might of the enemies over whom he was victorious; [3] another in the savage manners and perfidious dispositions of the people whom he conciliated; another in his reasonableness and mildness towards his captives; another still in the gifts and favours which he bestowed upon his soldiers; and all in the fact that he fought the most battles and killed the most enemies. For although it was not full ten years that he waged war in Gaul, he took by storm more than eight hundred cities, subdued three hundred nations, and fought pitched battles at different times with three million men, of whom he slew one million in hand to hand fighting and took as many more prisoners.