Answer:
The more you look at it, The less you see.
Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.
What can you hold in your left hand but can never hold in your right hand?
It speaks without a tongue, and listens without ears.
I go around in circles, But always straight ahead Never complain, No matter where I am led.
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?