Answer:
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
What begins and has no end? What is the ending of all that begins?
What is it something that you always have but you always leave behind?
I can run but not walk. Wherever I go, thought follows close behind.
Only two backbones and thousands of ribs.
When is it bad luck to see a black cat?