what is the difference between "dream" and "dream on"? I don't understand why one should put "on" at the end.

Sentences Nobody must give anybody anything. Anybody must not give anybody anything. Anybody never must give anybody anything. Everybody must not give anybody anything. Everybody must give nobody anything. Everybody never must give anybody anything. Are these sentences right? Are there any difference between ones? Are there another ways to say these sentences with the same meanings?

Negative Sentences 1) Nobody must anything to anybody. 2) Anybody must not anything to anybody. 3) I give not anything to anybody. 4) I give nothing to anybody. 5) I give anything to nobody. Is that sentences right? Is there the differences between ones? Do you understand me If I would say "nobody must not nobody to nothing" or "nobody must nobody to nothing"?

An Observation I sat on a chair against a computer monitor. Before me there was only the monitor and a wall. My cat sat on another chair next to me. There was between me and it a half meter. A floor above my neighbor was walking around over me. A floor below my neighbors were yelling at each other under me. There was quite quiet inside my flat, but was some noise outside of my room. I stood up on cold floor and walked to a window. There was not anything interesting in order to see it beyond the window. There was only a man walked across street, stray dog along street slowly to butchers', and a pup who was running for his tail around.