Three ways of writing a short story

R.L.Stevenson says:

There are, so far as I know, three ways and three only of writing a story. You may take a plot and fit characters to it, or you may take a character and choose incidents and situations to develop it, or, lastly, you may take a certain atmosphere and get actions and persons to express and realize it.” When to this clear conception of his limitations and privileges the author adds an imagination that clearly visualizes events and the “verbal magic” by which good style is secured, he produces the short story that is a masterpiece