Answer:
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
My first is equality; my second is inferiority; my whole is superiority.
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around.
What surrounds the world, yet dwells within a thimble?
My life is often a volume of grief, your help is needed to turn a new leaf. Stiff is my spine and my body is pale. But I'm always ready to tell a tale.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?