The Naked Sun (1957). The second robot novel.

The Robots of Dawn (1983). The third robot novel.

Robots and Empire (1985). The fourth robot novel.

The Currents of Space (1952). This is the first of my Empire novels.

The Stars, Like Dust (1951). The second Empire novel.

Pebble in the Sky (1950). The third Empire novel.

Prelude to Foundation (1988). This is the first Foundation novel (although it is the latest written, so far).

Foundation (1951). The second Foundation novel. Actually, it is a collection of four stories, originally published between 1942 and 1944, plus an introductory section written for the book in 1949.

Foundation and Empire (1952). The third Foundation novel, made up of two stories, originally published in 1945.

Second Foundation (1953). The fourth Foundation novel, made up of two stories, originally published in 1948 and 1949.

Foundations Edge (1982). The fifth Foundation novel.

Foundation and Earth (1983). The sixth Foundation novel.

Will I add additional books to the series? I might. There is room for a book between Robots and Empire (5) and The Currents of Space (6) and between Prelude to Foundation (9) and Foundation (10) and of course between others as well. And then I can follow Foundation and Earth (14) with additional volumes-as many as I like.

Naturally, there’s got to be some limit, for I don’t expect to live forever, but I do intend to hang on as long as possible.

Mathematician

CLEON I-… The last Galactic Emperor of the Entun dynasty. He was born in the year 11,988 of the Galactic Era, the same year in which Hari Seldon was born. (It is thought that Seldon’s birthdate, which some consider doubtful, may have been adjusted to match that of Cleon, whom Seldon, soon after his arrival on Trantor, is supposed to have encountered.)