Answer:
What covers its face with its hands, speaks no language, yet most known what it's saying?
It can cause deflation of tires when dropped from the rear of spy cars.
how many words are in those books
At the sound of me, one may dream or stamp their feet, At the sound of me, one may laugh or sometimes weep.
Slayer of regrets, old and new, sought by many, found by few.
I'm the source of all emotion but I'm caged in a white prison.