Suetonius: Not let slip any pretext for war, however unjust and dangerous
From Lives of the Twelve Caesars
Translated by J. C. Rolfe
Caesar compelled Pompeius and Crassus to come to Luca, a city in his province, where he prevailed on them to stand for a second consulship, to defeat Domitius; and he also succeeded through their influence in having his term as governor of Gaul made five years longer. Encouraged by this, he added to the legions which he had received from the state others at his own cost, one actually composed of men of Transalpine Gaul…which he trained in the Roman tactics and equipped with Roman arms; and later on he gave every man of it citizenship. After that he did not let slip any pretext for war, however unjust and dangerous it might be, picking quarrels as well with allied, as with hostile and barbarous nations; so that once the senate decreed that a commission be sent to inquire into the condition of the Gallic provinces, and some even recommended that Caesar be handed over to the enemy.
He doubled the pay of the legions for all time. Whenever grain was plentiful, he distributed it to them without stint or measure, and now and then gave each man a slave from among the captives.
He took no less pains to win the devotion of princes and provinces all over the world, offering prisoners to some by the thousand as a gift, and sending auxiliary troops to the aid of others whenever they wished, and as often as they wished, without the sanction of the senate or people…
There is a saying of Marcus Cato that Caesar was the only man who undertook to overthrow the state when sober.
Neither when in command of armies nor as a magistrate at Rome did he show a scrupulous integrity; for as certain man have declared in their memoirs, when he was proconsul in Spain,he not only begged money from the allies, to help pay his debts, but also attacked and sacked some towns of the Lusitanians although they did not refuse his terms and opened their gates to him on his arrival. In Gaul he pillaged shrines and temples of the gods filled with offerings, and oftener sacked towns for the sake of plunder than for any fault. In consequence he had more gold than he knew what to do with, and offered it for sale throughout Italy and the provinces at the rate of three thousand sesterces the pound. In his first consulship he stole three thousand pounds of gold from the Capitol, replacing it with the same weight of gilded bronze. He made alliances and thrones a matter of barter, for he extorted from Ptolemy alone in his own name and that of Pompey nearly six thousand talents, while later on he met the heavy expenses of the civil wars and of his triumphs and entertainments by the most bare-faced pillage and sacrilege.