Answer:
What goes around and around the wood, but never goes into the wood?
It's in your hand though you can not feel it. Only you and time can reveal it.
I am always in front of you, but you will never see me. What am I?
Just head and foot yet never tires of dancing.
Almost everyone needs it, asks for it, gives it. But almost nobody takes 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.