Answer:
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
This sparkling globe can float on water. It is light as a feather, but ten giants can't pick it up.
Tall, I am young. Old, I am short. With life I glow. Anemoi is my foe.
What falls down but is never injured?
What is it that you ought to keep after you have given it to someone else?
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.