Early one morning Woodpecker flew in for a special meeting with Raven and asked, "I've heard about essential nature, but I'm not sure what it is. Is it something that can be destroyed?"
Raven said, "That's really a presumptuous question."
Woodpecker ruffled her feathers a little and asked, "You mean I shouldn't question the matter?"
Raven said, "You presume there is one."
adapted from Robert Aitken, Zen Master Raven