Answer:
What is it that no man ever yet did see, which never was, but always is to be?
Come up and let us go. Go down and here we stay
In the forest, this blends in just right, but every December it is covered with lights. What is it?
What loses its head in the morning and gets it back at night?
Being able to interpret the letters on this screen proves that you have this quality.
You use it between your head and your toes, the more it works the thinner it grows.