I wear a red robe, with staff in hand, and a stone in my throat.
Walk on the living, they don’t even mumble, Walk on the dead, they mutter and grumble. What are they?
Do you know what you can hold without ever touching it?
What measures out time. Until in time all is smashed to 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.
Man's most important invention.