I read City back in the late 60's. I was captivated by the tale, or several tales actually, that make up the story. I realized that trying to explain it to someone unfamiliar with it just made it sound silly (talking dogs, lopers on Jupiter, robot butlers, etc.) so I would just recommend it to friends and let them discover the magic. Most did. Simak himself said he wrote the story to reassure himself, in the darkest days of the cold war, that there was a better world coming. And, in some ways the book is dated to that period. But in more important ways it's timeless. There is a poignancy to the stories that's difficult to describe, but which moves the reader more than at first realized. This is what keeps me coming back, these many years later, to re-read them. They seem to stimulate feelings associated with similar settings and activities in the reader's life, almost like prosaic haiku poetry. There is no hard science fiction here, and no high fantasy. There are wonderfully written, fanciful tales that will enchant and entertain readers of many different ages. I highly recommend City, now a fantasy sci-fi classic, and to this reader, Simak's best.