Answer:
Voiceless it cries, wingless flutters, toothless bites, mouthless mutters.
Used left or right, I get to travel over cobblestone or gravel. Used up, I vie for sweet success, used down, I cause men great duress.
Pirates put their booty in it.
You can spin, wheel and twist, but this thing can turn without moving. What is it?
Slayer of regrets, old and new, sought by many, found by few.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?