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 PullmanIorek Byrnison: Can is not the same as must. Lyra Silvertongue: But if you must and you can, then there's no excuse.
Philip PullmanPeople should decide on the books' meanings for themselves. They'll find a story that attacks such things as cruelty, oppression, intolerance, unkindness, narrow-mindedness, and celebrates love, kindness, open-mindedness, tolerance, curiosity, human intelligence.
Philip Pullman