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.
A home of wood in a wooded place, but built not by hand. High above the earthen ground, it holds its pale blue gems. What is it?
Often held but never touched. Always wet but never rusts. Often bits but seldom bit. To use it well you must have wit.
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
Though blind as well, can lead the blind well.
What is so fragile that saying its name breaks it?