Answer:
We are few to the wise; We are abundant to the drunken; We can calm the beast and are precious to the child; We can devour the heart, without piercing the skin
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
Look into my face and I'm everybody. Scratch my back and I'm nobody.
What measures out time. Until in time all is smashed to it?
I move without wings, Between silken string, I leave as you find, My substance behind.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?