Plutarch, Pompey
Bernadotte Perrin, Ed.

17. But a general quite unlike Lepidus, namely Sertorius, was in possession of Spain, and was threatening the Romans like a formidable cloud. As if for a final disease of the state, the civil wars had poured all their venom into this man. He had already slain many of the inferior commanders, and was now engaged with Metellus Pius, an illustrious man and a good soldier, [2] but, as men thought, too slow by reason of his years in following up the opportunities of war, and outdistanced when events swept along at high speed. For Sertorius attacked him recklessly and in robber fashion, and by his ambuscades and flanking movements confounded a man who was practised in regular contests only, and commanded immobile and heavy-armed troops.¹ [3] Pompey, therefore, who kept his army under his command, tried to get himself sent out to reinforce Metellus, and although Catulus ordered him to disband his soldiers, he would not do so, but remained under arms near the city, ever making some excuse or other, until the senate gave him the command, on motion of Lucius Philippus. [4] On this occasion, too, they say that a certain senator asked with amazement if Philippus thought it necessary to send Pompey out as pro-consul. ‘No indeed!’ said Philippus, ‘but as pro-consuls,’ implying that both the consuls of that year were good for nothing.