In Greek mythology, Moros (Ancient Greek: Μόρος means 'doom, fate') is the 'hateful' personified spirit of impending doom, who drives mortals to their deadly fate. It was also said that Moros gave people the ability to foresee their death. Moros is the offspring of Nyx, the primordial goddess of the night. It is suggested by Roman authors that Moros was sired by Erebus, primordial god of darkness. However, in Hesiod's Theogony it is suggested that Nyx bore him by herself, along with several of her other children. Regardless of the presence or absence of Moros' father, this would make him the brother of the Moirai, or the Fates. Among his other siblings are Thanatos and the Keres, death spirits who represented the physical aspects of death—Keres being the bringers of violent death and terminal sickness, while Thanatos represents a more peaceful passing. Moros wrote the destination; the Fates made sure that it came true, and shortly afterwards, chaos was integrated into the cosmos for all beings that could escape on the occasion of their own destiny. It was even proclaimed by the Moirae that not even Zeus could question Moros (destiny), who like his mother, Nyx, was invisible and dark. To break with destiny was to reintroduce Chaos into the world. Even if Zeus issued a decree or made a promise he later regretted, he could not then change his decree because it was destiny. In which case, he was the only force that Zeus dreaded. Because of this, Moros was also considered to be omnipotent, omniscient, and omnipresent. Aeschylus describes how Prometheus saved mankind from the misery of seeing their doom (Moros) with the gift of hope (Elpis).