Answer:
I move without wings, Between silken string, I leave as you find, My substance behind.
White fat and fluffy, May even look like a puppy. Seems heavy but is light, Floats about without a worry, But if it turns dark you have to hurry!
I pass before the sun, but make no shadow.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
A warrior amongst the flowers, he bears a thrusting sword. He uses it whenever he must, to defend his golden hoard.
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright