"You have a strange way about you, Dr. Grumman. You ever spend any time among the witches?" "Yes," said Grumman. "And among academicians, and among spirits. I found folly everywhere, but there were grains of wisdom in every stream of it. No doubt there was much more wisdom that I failed to recognize. Life is hard, Mr. Scoresby, but we cling to it all the same." "And this journey we're on? Is that folly or wisdom?" "The greatest wisdom I know." "Tell me again what your purpose is. You're going to find the bearer of this subtle knife, and what then?" "Tell him what his task is." "And that's a task that includes protecting Lyra," the aeronaut reminded him. "It will protect all of us."