One of two Men found an Axe. The other claimed part of the find until the owner showed up to take the Axe back. The other quickly withdrew the claim. He who shares the danger ought to share the prize.
The trees willingly give a woodsman a shaft for his axe. Ooops, too bad. Nothing bothers a man more than to see he has aided his own undoing.
An Oak tree was cut down and split using wedges made from its own wood. The Oak lamented the fact that its own material was used against it. Misfortunes springing from ourselves are the hardest to bear.