Answer:
What can go through glass without breaking it?
What comes once in a minute, twice in a moment, but never in a thousand years?
At the sound of me, one may dream or stamp their feet, At the sound of me, one may laugh or sometimes weep.
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.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
What is so fragile that saying its name breaks it?