Answer:
I am between earth and heaven. What am I?
I'm the source of all emotion but I'm caged in a white prison.
I am a table you can eat. What am I?
When I am caught, I am thrown away. When I escape, you itch all day. What am I?
I am a ship that can be made to ride the greatest waves. I am not built by tool, but built by hearts and minds. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.