Answer:
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
Never alive but practically extinct. How we miss the letters pressing the ribbon of ink. What is it?
What wears a coat in the winter and pants in the summer?
You can see nothing else, When you look in my face, I will look you in the eye, And I will never lie.
If I say "everything I tell you is a lie", am I telling you the truth or a lie?