Salvador Dali Leda Atomica

Then how can you know everything it does?"
"I can't. But I must still use it, and do what I can to help good things come about. If I did nothing, I'd be worse than useless. I'd be guilty."
Lyra was following this closely, and seeing Iorek still unwilling, she said:
"Iorek, you , use it, we won't stop you.' All right, we don't know what it does, but I can ask the alethiometer, can't I? Then we'd know. And we could think about it properly, instead of just guessing and being afraid."
Will didn't want to mention his own most pressing reason: if the knife was not repaired, he might never get see his mother again; she would never know what had happened; she'd think he'd abandoned her as his father had done. The knife would have been directly responsible for both their desertions. He must use it to return to her, or never forgive know how wicked those Bolvangar people were. If we can't win, then they're going to be able to carry on doing those kind of things forever. And besides, if we don't have the knife, then they might get hold of it themselves. We never knew about it when I first met you, Iorek, and nor did anyone, but now that we do, we got to use it ourselves, we can't just not. That'd be feeble, and it'd be wrong, too, it'd be just like handing it over to 'em and saying, 'Go on