Answer:
You can read it both ways, I wearΝΎ One way it's a number, reversed a snare.
What flies without wings? What passes all things? What mends all sorrow? What brings the morrow?
I build up castles. I tear down mountains. I make some men blind. I help others to see.
Do you know what you can hold without ever touching it?
I'm the source of all emotion, but I'm caged in a white prison.
Keep doing me to avoid lens dryness
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?