Answer:
In this place, people lie, people cry, and people ask why. In this place, people sleep, people weep, and people's solitude, they keep. What is it?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
I am a precious little thing, dancing and eating all the time. Watch me from a distance, so you can feel my warm and gentle love. But don't come to close or my next meal you could be!
Tall in the morning, short at noon, gone at night. But I'll be back soon.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
What is always coming but never arrives?