For the source of the short story is usually lyrical. And all writers speak from, and speak to, emotions eternally the same in all of us: love, pity, terror do not show favorites or leave any of us out.
Eudora WeltyA short story is confined to one mood, to which everything in the story pertains. Characters, setting, time, events, are all subject to the mood. And you can try more ephemeral, more fleeting things in a story - you can work more by suggestion - than in a novel. Less is resolved, more is suggested, perhaps.
Eudora Welty