[Eley hesitates at that. To be honest, he'd never really witness firsthand what would happen to a Spirit, should they be cut down whilst in a physical form. None of them had really come close enough to humanity, especially those in conflict, to witness that kind of injury firsthand.]

I feel that it may be possible, should someone have the power to kill us while we manifest ourselves in a physical form. Yet it has never happened in that way. Even a lack of belief, though it will weaken us, will not wipe us out of existence, leaving us only in a dormant state. Our essence is tied with that of the planet. Only if the planet dies will we truly disappear.

...that is still possible, however.