Answer:
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time weβll last.
The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?
What is lighter than what it is made of?
What can be seen but never found that only hides in the unwound?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?