Caves of Steel – Isaac Asimov
What I admire the most about Asimov is that if he sets a story in the future, he is able to add so much detail to it that it feels real and possible.
Pebble In The Sky – Isaac Asimov
The one portion where Asimov’s talent shines through is the portion in which Joseph Schwartz, a simple tailor from the 1960s, who gets teleported to the distant future, begins to realize his mind’s powers (after being treated by the Synapsifier) and how he learns the ways of the new world.