Answer:
I run smoother than any rhyme I love to fall but cannot climb.
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
I build up castles. I tear down mountains. I make some men blind, but I help others to see. What am I?
What can be drawn but never taken?
The shorter I am the bigger I am.
I am free the first time and second time but the third time is going to cost you money.