Abstract
In his De Iside et Osiride, Plutarch writes: "The Chaldaeans call two of the planets, which they consider benign gods, the authors or sources of everything that is good, two, on the other hand, the authors or sources of everything that is evil, and the three remaining planets they regard as being 'in between,' participating in the two opposite qualities.... It is worthwhile also to observe that the [Greek] philosophers are in accord with the Chaldaeans. For this reason Heraclitus [of Ephesus] declared 'war the father, king and ruler of everything....' After him Empedocles designates the benign principle as 'love and friendship,' and at times as 'the harmony of the serene eye,' while at the same time he defines the evil principle as 'the cursed discord' and 'the bloody struggle....' Aristotle [by following this tradition] proclaims the [principle of] form and [the principle of] privation...."