Answer:
What turns everything around but does not move?
What flies without wings? What passes all things? What mends all sorrow? What brings the morrow?
A dagger thrust at my own heart, dictates the way I'm swayed. Left I stand, and right I yield, to the twisting of the blade.
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see.
Sometimes black, sometimes white, I have veins but no blood
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?