Logic Riddles

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

Question: A man is at work when he turns off the light and falls asleep. When he wakes up he discovers that lots of people have died.

What is his profession?

Question: A very important man is about to take a trip to Iceland. He is awoken in the middle of the night by his security guard the night before he is supposed to leave. His guard tells him he needs to take a boat rather than a plane, because he just dreamt that the plane was going to crash. The guard leaves because it's the end of his shift.

The man listens to his guard and takes a boat. Soon after arriving in Iceland he hears that the plane he was supposed to go on crashed. When he arrives home he fires his guard.

Why?