The Robots of Dawn

The Robots of Dawn, written in 1983, fairly late in Asimov's science fiction career, is quintessential Asimov, with the exception that it contains a sexual aspect that isn't characteristic of most of his work. The story doesn't contain explicit sex scenes, but sex does play an important role.

In this book, Asimov sets the seeds of the science of psychohistory, the basis of the Foundation series, written decades earlier, but which takes place thousands of years in the future.