Answer:
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
The sun bakes them, the hand breaks them, the foot treads on them, and the mouth tastes them.
I am a box that holds keys without locks, yet they can unlock your soul.
What has four wings but cannot fly and uses the wind but does not know why?
What is the smallest bridge in the world?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?