There are no rules. You can write a story, if you wish, with no conflict, no suspense, no beginning, middle or end. Of course, you have to be regarded as a genius to get away with it, and that's the hardest part - convincing everybody you're a genius.
Fredric BrownThere is a sweet little horror story that is only two sentences long: The last man on Earth sat alone in a room. There was a knock at the door... Two sentences and an ellipsis of three dots.
Fredric BrownDon't ever sell mankind short by saying there's anything he can't do, ever, or anything that he isn't going to do.
Fredric Brown