According to Burton, the Ethical who talked to him did not agree with his fellows. Apparently, there was dissension even among those beings who we could account as gods. Dispute or discord in Olympus, if I may draw such a parallel. Though I do not think that the so-called Ethicals are gods, angels, or demons. They are human beings like us but advanced to a higher ethical plane. What their disagreement is, I frankly do not know. Perhaps it is about the means used to achieve a goal.
Ch. 19 - The Riverworld series - The Magic Labyrinth (1980)