De Agricultura
Philo Judaeus
The works of Philo Judaeus, the contemporary of Josephus, volume 1. Yonge, C. D., translator. London: Henry G. Bohn, 1854.
Beware, therefore, never to occupy yourself in this kind of horse-breeding, for they who pursue the other kind are themselves also blameable, for how can they not be? inasmuch as by them irrational animals are exceedingly humoured, and from their houses troops of well-fed horses continually go forth; while to the men who conduct them, not a person is found who ever gives the slightest contribution to relieve their wants, nor any present to increase their superfluities.