She had asked: What is he? A friend or an enemy? The alethiometer answered: He is a murderer. When she saw the answer, she relaxed at once. He could find food, and show her how to reach Oxford, and those were powers that were useful, but he might still have been untrustworthy or cowardly. A murderer was a worthy companion. She felt as safe with him as she'd done with Iorek Byrnison the armoured bear.
Philip PullmanA story, to me, has a particular sprite, like the angel of the spirit of that story - and it's my job to attend to what it wants to do. When I tell the story of Cinderella, the sprite does not want me to make it into an allegory of the fall of communism. The sprite would be unhappy if I did that.
Philip PullmanWhat work do I have to do then?" said Will, but went on at once, "No, on second thought, don't tell me. I shall decide what I do. If you say my work is fighting, or healing, or exploring, or whatever you might say, I'll always be thinking about it. And if I do end up doing that, I'll be resentful because it'll feel as if I didn't have a choice, and if I don't do it, I'll feel guilty because I should. Whatever I do, I will choose it, no one else.
Philip Pullman