Answer:
What is used by man, tossed by trees, everywhere but unseen?
I'm the source of all emotion, but I'm caged in a white prison.
If you blow past your destination, you'll have to throw your car into this.
Pointing North, South, East, and West it saves the lost and helps the rest. What is it?
The more you take away, the bigger it gets.
I'm the source of all emotion but I'm caged in a white prison.