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.
It's in your hand though you can not feel it. Only you and time can reveal it.
Everyone has me except for a few. You may not be able to identify me but I can always identify you. What am I?
I am whole but incomplete. I have no eyes, yet I see. My largest part is one fourth of what I once was. What am I?
I can be swallowed But I can also swallow you.
When is it bad luck to see a black cat?