Good Riddles

Question: I can't go left, I can't go right. I am forever stuck in a building over three stories high. What am I?

Question: The more you add, the less it weighs.

Question: I'm simple for a few people But hard for them to hear I live inside of secrets I bring people's worst fears What am I?

Question: Rarely touched but often held If you have wit, you'll use me well What am I?

Question: A horse jumps over a castle and lands on a man, then the man disappears. How was this possible?