Answer:
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
It's in your hand though you can not feel it. Only you and time can reveal it.
This is needed both for courage and hardcover books.
Large as a mountain, small as a pea, Endlessly swimming in a water-less sea.
What is the smallest bridge in the world?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.