Answer:
It is a part of us, and then replaced. It escapes out bodies, to a better place. The world becomes its sizeable home. Its passions unrestraint, the planet it roams.
It cannot be seen, cannot be felt, Cannot be heard, cannot be smelt. It lies behind stars and under hills And empty holes it fills. It comes first and follows after, Ends life, kills laughter.
What goes through a door but never goes in. And never comes out?
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright