Answer:
When I live I cry, If you don't kill me I'll die.
Though blind as well, can lead the blind well.
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
It is greater than God and more evil than the devil. The poor have it, the rich need it, and if you eat it you'll die.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
What did the piece of wood say when he saw the screwdriver and screws approaching?