Answer:
Walk on the living, they don’t even mumble, Walk on the dead, they mutter and grumble. What are they?
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
What doesn't get any wetter, no matter how much rain falls on it?
I tremble at each breath of air, and yet can heaviest burdens bear.
We travel much, yet prisoners are, and close confined to boot. Yet with any horse, we will keep the pace, and will always go on foot.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?