I'll have Nightfall and Other Stories, Earth Is Room Enough, I Robot, The Rest of the Robots, Before the Golden Age, Early Asimov, and Buy Jupiter, so is that pretty good for a set of Asimov's short fiction? In novels, I'll have Pebble in the Sky, the Foundation Trilogy, Caves of Steel, Naked Sun, End of Eternity, Currents of Space, The Stars Like Dust, Fantastic Voyage, and The Gods Themselves.
I had a nagging feeling that I was forgetting something, and I was -- The Martian Way.
How important is Nine Tomorrows?
It's hard for me to order the collections but It's definitely nearer the top end than the bottom. It has two stories that would make any "Best of" in "The Last Question" and "The Ugly Little Boy" (but you probably have those in some anthology or another) but also has "The Feeling of Power", "I'm in Marsport Without Hilda" and others that I like. Looks like you're missing that,
Asimov's Mysteries (which, despite the title, is SF),
The Bicentennial Man, and
The Winds of Change. So, yep, pretty good but TBM is essential and TWOC has "Belief", "Fair Exchange", "Found", "Ideas Die Hard", and several other pretty good ones. AM is not bad, either though a couple of stories repeat from
Nine Tomorrows.
What I think of as "the major collections" are
- The Martian Way
- Earth Is Room Enough
- Nine Tomorrows
- Asimov's Mysteries
- Nightfall
- The Early Asimov
- Buy Jupiter
- The Bicentennial Man
- The Winds of Change
Then there's
Gold and
Magic, of course, but they're posthumous and really one volume's worth of fiction annoyingly split into two and padded with nonfiction. And
Azazel as a connected collection of fantasy stories involving the titular pocket demon. And, obviously, the robot stories are essential but haven't been definitively collected. First
I, Robot and
The Rest of the Robots (which includes the first two robot novels before the eight stories were split into their own paperback) and those two were somewhat superseded by
The Complete Robot (which was definitive at the time) but then he wrote more robot stories which appear in dribbles embedded in reprints in
Robot Dreams and
Robot Visions, as well as some in the all-original but not-all-robot
Gold. And I think of the original Foundation trilogy as collections rather than novels but, either way, you've got them. As far as the novels go, that's it for the early/middle ones (aside from the Lucky Starr juveniles). I love his first two "comeback" novels (the fourth Foundation book,
Foundation's Edge, and the third Robot novel,
Robots of Dawn) and I like all the rest, too, but many people wouldn't consider them essential.
Could the novel Nightfall be regarded as early Asimov since Asimov approved of it?
I don't count it as Asimov at all. It's more like a late Silverberg novel and I didn't especially like it and certainly don't see any need for it. But opinions vary - some people do like it. There were actually three of those - I think "The Ugly Little Boy" was turned into a novel by Silverberg and some robot story (possibly "The Bicenteninial Man") was turned into something - maybe
The Positronic Man or something like.