Res Gestae

Now since it was expected that a great number of tribes with greater forces would make head together, our cautious commander, weighing the doubtful issue of wars, was perplexed with great burdens of anxiety. So, thinking that during the truce, short though it was and full of business, some remedy might be found for the calamitous losses incurred by the land-holders, he set in order the system of taxation.