After the defeat, a great part of those who had escaped fled with their king into a town called Alesia, which Caesar besieged, though the height of the walls, and number of those who defended them, made it appear impregnable; and meantime, from without the walls, he was assailed by a greater danger than can be expressed. For the choice men of Gaul, picked out of each nation, and well armed, came to relieve Alesia, to the number of three hundred thousand; nor were there in the town less than one hundred and seventy thousand. So that Caesar being shut up betwixt two such forces, was compelled to protect himself by two walls, one towards the town, the other against the relieving army, as knowing if these forces should join, his affairs would be entirely ruined. The danger that he underwent before Alesia justly gained him great honour on many accounts, and gave him an opportunity of showing greater instances of his valour and conduct than any other contest had done. One wonders much how he should be able to engage and defeat so many thousands of men without the town, and not be perceived by those within, but yet more, that the Romans themselves, who guarded their wall which was next to the town, should be strangers to it. For even they knew nothing of the victory, till they heard the cries of the men and lamentations of the women who were in the town, and had from thence seen the Romans at a distance carrying into their camp a great quantity of bucklers, adorned with gold and silver, many breastplates stained with blood, besides cups and tents made in the Gallic fashion. So soon did so vast an army dissolve and vanish like a ghost or dream, the greatest part of them being killed upon the spot. Those who were in Alesia, having given themselves and Caesar much trouble, surrendered at last; and Vergentorix, who was the chief spring of all the war, putting his best armour on, and adorning his horse, rode out of the gates, and made a turn about Caesar as he was sitting, then quitting his horse, threw off his armour, and remained quietly sitting at Caesar's feet until he was led away to be reserved for the triumph.
Caesar had long ago resolved upon the overthrow of Pompey, as had Pompey, for that matter, upon his. For Crassus, the fear of whom had hitherto kept them in peace, having now been killed in Parthia, if the one of them wished to make himself the greatest man in Rome, he had only to overthrow the other; and if he again wished to prevent his own fall, he had nothing for it but to be beforehand with him whom he feared. Pompey had not been long under any such apprehensions, having till lately despised Caesar, as thinking it no difficult matter to put down him whom he himself had advanced. But Caesar had entertained this design from the beginning against his rivals, and had retired, like an expert wrestler, to prepare himself apart for the combat. Making the Gallic wars his exercise-ground, he had at once improved the strength of his soldiery, and had heightened his own glory by his great actions, so that he was looked on as one who might challenge comparison with Pompey. Nor did he let go any of those advantages which were now given him both by Pompey himself and the times, and the ill-government of Rome, where all who were candidates for offices publicly gave money, and without any shame bribed the people, who, having received their pay, did not contend for their benefactors with their bare suffrages, but with bows, swords, and slings. So that after having many times stained the place of election with blood of men killed upon the spot, they left the city at last without a government at all, to be carried about like a ship without a pilot to steer her; while all who had any wisdom could only be thankful if a course of such wild and stormy disorder and madness might end no worse than in a monarchy. Some were so bold as to declare openly that the government was incurable but by a monarchy, and that they ought to take that remedy from the hands of the gentlest physician, meaning Pompey, who, though in words he pretended to decline it, yet in reality made his utmost efforts to be declared dictator. Cato, perceiving his design, prevailed with the senate to make him sole consul, that with the offer of a more legal sort of monarchy he might be withheld from demanding the dictatorship. They over and above voted him the continuance of his provinces, for he had two, Spain and all Africa, which he governed by his lieutenants, and maintained armies under him, at the yearly charge of a thousand talents out of the public treasury.