Answer:
What is put on a table, cut, but never eaten?
A hole leading in, a hole leading out, we connect to a cavern that is slimy all throughout. What are we?
What can be measured but not seen?
I am a good state, there can be no doubt of it; But those who are in, entirely are out of it.
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
What is always coming but never arrives?