Answer:
It cannot be seen, cannot be felt, Cannot be heard, cannot be smelt. It lies behind stars and under hills And empty holes it fills. It comes first and follows after, Ends life, kills laughter.
I build up castles. I tear down mountains. I make some men blind. I help others to see.
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
A red drum which sounds without being touched, and grows silent, when it is touched.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
I am your mother's brother's only brother in law. Who am I?