Answer:
Hard to catch, easy to hold. Can't be seen, unless it's cold
I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me. Lower light I never see.
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.
What covers its face with its hands, speaks no language, yet most known what it's saying?
What comes once in a minute, twice in a moment, but never in a thousand years?
What is always coming but never arrives?