Greek underworld his duty was to bring these souls to the underworld and no one would persuade him to do otherwise. Cerberus (Kerberos), or the "Hell-Hound", is Hades' massive multi-headed (usually three-headed) dog with some descriptions stating that it also has a snake-headed tail and snake heads on its back and as its mane. Born from Echidna and Typhon, Cerberus guards the gate that serves as the entrance of the underworld. Cerberus' duty is to prevent dead people from leaving the underworld. Heracles once borrowed Cerberus as the final part of the Labours of Heracles. Orpheus once soothed it to sleep with
Hell Is the Absence of God the Book's lesson was that "virtue isn't always rewarded"? In interviews Chiang has explicitly stated that "Hell Is the Absence of God" is "straight fantasy", because it takes place in a universe "in which the scientific method doesn't work". He said it is about "innocent suffering", and the way people devoted to God deal with it. He also said that the novelette examines the role of faith in religion, and suggests that if God undeniably existed, then faith would no longer be applicable. Robert J. Sawyer and David G. Hartwell described "Hell Is the Absence of God" as the "best