I believe that each human being has within himself or herself at least one poem or short story, or perhaps even a full length book.

Perhaps a body of work isn't necessary for a short story writer. If you do one story that survives in an anthology, that's enough.

A short story is a shard, a sliver, a vignette. It's a biopsy on the human condition but it doesn't have this capacity to think autonomously for itself.

I think it's a short story writer's duty, as well as writing well about emotions and characters, to write story.

Impatience kills quickly.

Well, to be honest I think I'm a better short story writer than a novelist. Novels I find very hard, hours and hours, weeks and weeks, of conscious thought - whereas short stories slip out painlessly in a few days.