Answer:
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams, my merest touch brings laughter
Don't do this in the shallow end.
I tremble at each breath of air, and yet can heaviest burdens bear.
What has two spines and a lot of ribs, and carries much but never moves?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
What is so fragile that saying its name breaks it?