This is one of my favorite novels by Isaac Asimov, and I think underrated among his works, perhaps because it's a one-off, not something that ties into his Foundation or Robot series. I remember the outline of the story even decades after my first read, which is a sign of its ability to have an impact. What particularly stands out is the world-building. This is as intriguing, imaginative and well-thought out a world than any you can find in Asimov. Eternity is an organization that holds itself out of time. The "Eternals" are from almost all the centuries of man's post-industrial existence--and control and continually tweak that existence, altering reality without the knowledge or consent of those in "Time."
Andrew Harlan is a technician in Eternity, helping to make those changes and quite self-satisfied in his role--until Lambent Noys throws a wrench into the gears of his mind and heart. Noys, even if she fits a fairly traditional role in the book, is still one of Asimov's stronger and most memorable female characters. She's more than she seems and in the end Asimov delivers through her quite the critique of patriarchy and paternalism, particularly through the growth of Harlan, one of his most misogynistic characters. I found myself amused by this passage with its reversal of the usual assumptions of women's impact upon history:
Women almost never qualified for Eternity because, for some reason he did not understand (Computers might, but he himself certainly did not), their abstraction from Time was from ten to a hundred times as likely to distort Reality as was the abstraction of a man.
And there's something about the themes and conclusion of this one I find very satisfying. Like all of Asimov's writing, it's great at making you think--but this also had heart.
