Answer:
Both punishment and sweet reward, It will befall both fool and lord. It is a spiritual scoreboard, Your every deed it does record.
You seek it out, when your hunger is ripe. It sits on four legs, and smokes a pipe.
I am so simple that I can only point. Yet I guide men all over the world.
As a whole, I am both safe and secure. Behead me, I become a place of meeting. Behead me again, I am the partner of ready. Restore me, I become the domain of beasts.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
You use it between your head and your toes, the more it works the thinner it grows.