Answer:
Soft and fragile is my skin, I get my growth in mud. Iโm dangerous as much as pretty, for if not careful, I draw blood.
It holds most knowledge that has ever been said. But is not the brain, is not the head. To feathers and their masters, it's both bane and boonย One empty, and one full.
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
Goes over all the hills and hollows. Bites hard, but never swallows.
Left to right Iโm quite bright. Right to left I might bite.
What did the piece of wood say when he saw the screwdriver and screws approaching?