XVIII. When Pompeius arrived in Iberia, as it usually happens with the reputation of a new commander, he gave the people great hopes, and the nations which were not firmly attached to the party of Sertorius began to stir themselves and change sides; whereupon Sertorius gave vent to arrogant expressions against Pompeius, and scoffingly said, he should only need a cane and a whip for this youth, if he were not afraid of that old woman, meaning Metellus. However he conducted his military operations with more caution, as in fact he kept a close watch on Pompeius and was afraid of him. For contrary to what one would have expected, Metellus had become very luxurious in his mode of life and had completely given himself up to pleasure, and there had been all at once a great change in him to habits of pride and extravagance, so that this also brought Pompeius a surpassing good-will and reputation, inasmuch as he maintained a frugal mode of living, a thing that cost him no great pains, for he was naturally temperate and well regulated in his desires. Though there were many vicissitudes in the war, the capture of Lauron by Sertorius gave Pompeius most annoyance; for while he supposed that Sertorius was surrounded, and had uttered certain boasting expressions, all at once it appeared that he himself was completely hemmed in, and as for this reason he was afraid to stir, he saw the city burnt before his face. But he defeated, near Valentia, Herennius and Perpenna, who were men of military talent, and among others had fled to Sertorius and served under him; and he slaughtered above ten thousand of their men.