Kitap 17
1.3
When they had appointed a king, they divided the people into three classes, into soldiers, husbandmen, and priests. The latter had the care of everything relating to sacred things (of the gods), the others of what related to man; some had the management of warlike affairs, others attended to the concerns of peace, the cultivation of the ground, and the practice of the arts, from which the king derived his revenue.
1.3
The priests devoted themselves to the study of philosophy and astronomy, and were companions of the kings.