"The Law of the Jungle: Only the Strong survive."
Perhaps the main difference, between the Order Goddess Astrya and the Chaos Goddess Cynthia was their interpretation of this quote .
Astrya believed that personal strength was not the most important and that the weak and the strong could live together under the laws of the Gods. She believed that they would complement each other's weaknesses—this was her notion of a perfect society. Cynthia, however, believed in the competition between mortals for survival with only the strongest living on. Her notion of a perfect world was one where the best resources were provided to the mortals with the greatest potential.
The root of their enmity was this difference in their ideals, which had also made them develop their creations very differently.