If any writer can be said to have invented the modern short story, it is Anton Chekhov. It is not just that Chekhov democratized this art form; more than that, he changed the thrust of short fiction from relating to revealing. And what marvelous and unbearable things are revealed in these Forty Stories. The abashed happiness of a woman in the presence of the husband who abandoned her years before. The obsequious terror of the official who accidentally...