If light can cross the barrier between the universes, if Dust can, if we can see that city, then we can build a bridge and cross. It needs a phenomenal burst of energy. But I can do it. Somewhere out there is the origin of all the Dust, all the death, the sin, the misery, the destructiveness in the world. Human beings can’t see anything without wanting to destroy it, Lyra. That’s original sin. And I’m going to destroy it. Death is going to die.

Lord Asriel, His Dark Materials.