Answer:
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
My tail is long, my coat is brown. I like the country, I like the town. I can live in a house or live in a shed, and I come out to play when you are in bed. What am I?
I pass before the sun but make no shadow. What am I?
Sometimes I am white, sometimes I am dark. Most people love me. What am I?
I bring light to a dark world. In a current I travel and through tunnels I am hurled. Touch me and I'll kill you. What am I?
What made Cyclops quit teaching?