Answer:
What can you fold but not crease?
how many words are in those books
What goes in, but never through? I've got some and so do you. We might lend one, or even two, but only if our trust is true.
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.
What does man love more than life, fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends, and the spendthrift saves. And all men carry to their graves.
I can only be played on a windy day