Answer:
What is it that leaps and runs and yet, has no feet?
What has no hands but might knock on your door, and if it does you better open up?
It speaks without a tongue, and listens without ears.
A precious gift, yet it has no end, no beginning, and nothing in the middle.
They are the shore's gallant knights.
What begins and has no end? What is the ending of all that begins?