De Agricultura
Philo Judaeus
The works of Philo Judaeus, the contemporary of Josephus, volume 1. Yonge, C. D., translator. London: Henry G. Bohn, 1854.
But since the matter before us, at present, is to consider the rational and irrational powers in the soul, those persons will naturally boast, who are persuaded that they are able to master the irrational faculties, by taking the rational ones for their allies.