Answer:
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
I am the kind of a tree that is carried in your hand. What am I?
Fashions change, but what can a person wear that is never out of style?
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
Who plays when he works and works when he plays?
What is lighter than what it is made of?