Plutarch, Pompey
Bernadotte Perrin, Ed.

65. When their senate convened and a decree was passed, on motion of Cato, that no Roman should be killed except on a field of battle, and that no city subject to Rome should be plundered, the party of Pompey was held in still greater favour. For those even who took no part in the war, either because they dwelt too far away, or were too weak to be regarded, attached themselves to it in their wishes at least, and, as far as their words went, fought with it in behalf of the right, considering him a foe to gods and men who did not wish Pompey to be victorious.

[2] However, it is also true that Caesar showed himself merciful as a conqueror; after defeating and capturing the forces of Pompey in Spain, he sent away their commanders, and took the soldiers into his service.¹ Then he re-crossed the Alps, marched rapidly through Italy, and came to Brundisium shortly after the winter solstice.² [3] Crossing the sea there, he himself put in at Oricum, but he dispatched Vibullius, the friend of Pompey, who was his prisoner of war, to Pompey, with a proposition that they should hold a conference, disband all their armies within three days, and after renewing their friendship under oath, return to Italy. [4] This Pompey thought to be another snare, and marching swiftly down to the sea, he took possession of the posts, regions, and sites which offered strong positions for land forces, as well as of the naval stations and landing-places which were favourable for those who came by sea, so that every wind that blew brought Pompey grain, or troops, or money; while Caesar, on the other hand, reduced to straits by sea and land, was forced to seek a battle, attacking Pompey's defences and challenging him to come out all the while. [5] In these skirmishes Caesar was for the most part victorious and carried the day; but once he narrowly escaped being utterly crushed and losing his army, for Pompey made a brilliant fight and at last routed Caesar's whole force and killed two thousand of them. He did not, however, force his way into their camp with the fugitives, either because he could not, or because he feared to do so, and this led Caesar to say to his friends: ‘To-day victory would have been with the enemy if they had had a victor in command.’