Answer:
You are on an electric train. Which direction will the smoke fly in?
The negative hero in each story
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
Pointing North, South, East, and West it saves the lost and helps the rest. What is it?
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.