Answer:
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
Break me and I am better, immediately set and harder to be broken again. What am I?
I can never be stolen from you. I am owned by everyone. Some have more some have less.
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
What has a bottom at the top?
When is it bad luck to see a black cat?