Answer:
What surrounds the world, yet dwells within a thimble?
Iron roof, glass walls, burns and burns and never falls.
Mountains will crumble and temples will fall. And no man can survive its endless call.
What is that which, though black itself, enlightens the world without burning?
What has one eye but cannot see?
A town has only two barbers. One of the barbers has a nice, tidy haircut, and the other has a shaggy, messy haircut. Which barber should you go to?