Good Riddles

Question: What is he that builds stronger than either the mason, the shipwright, or the carpenter?

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: What do you call a person that has no nose and has no body??

Question: What do you have that I use more than you do?

Question: I can be used to build castles,
but I crumble in your hands.
I can help a man see,
and am found all around the lands.

What am I?