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.
You will always find me in the past. I can be created in the present, but the future can never taint me. What am I?
What room do ghosts avoid?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
I can be cracked, made, told, and played. What am I?
I'm the source of all emotion but I'm caged in a white prison.