From now on, every ghost who enters the world of the dead…

““From now on, every ghost who enters the world of the dead will have to come with a story, the story of his or her life, and tell it to the harpies. It doesn't have to be a big adventure; it can just be a description of a day playing with the children, like Lyra's, or whatever it might happen to be. In exchange for this true story, the harpies will lead that ghost outside to dissolve into the Universe and be one with everything else. Of course, I stole that, as I stole everything else! I stole that from the Oresteia -- the bargain Aeschylus's characters make with the Furies that are following them about. "You will be the guardians of this place, and we will worship you and we will give you honor," they say. Then the Furies are satisfied, and they leave off their pursuit of Orestes. There's nothing new in stories. It goes round again and again and again. But that was something that I thought was a good way out for Lyra, and it did reassert the value of story. States it fully and clearly, brings it out. And also the value of realistic story. It's got to be true. And there's a moral consequence; for those who have eyes to see, they can see it: you have to live. You have to experience things to have a story to tell, and if you spend all your life playing video games, that will not do.””

— Philip Pullman