Last of the big four from the Golden Age of science fiction has passed away. The ABC's and H, as they were known: Asimov, Bradbury, Clarke, and Heinlein. Bradbury made it to ninety-one.
If you don't know who he was, there's no help for you here ...
When I started writing, I came across a Bradbury how-to advice piece, said something to the effect of, If you write a short story a week for about twenty years, you'll start to get good at it. That was my goal, though I made it only about forty weeks before I crashed and burned.
Adios, Ray. You told some swell stories.