Answer:
Old people and owls are said to be this.
What must be looked through in order to see?
What goes up let's of a load and come back down
It comes from crystal and melts to a treat. Add it to your tea to make it sweet. What is it?
I am neither a guest nor a trespasser in this place. I belong that belongs to me. Where is it?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.