After 10 years in space, astronaut Hal Bregg returns home to find that, in accordance with the laws of Einsteinian relativity, 127 years have elapsed on Earth.  Confronting what is essentially an alien culture, Bregg finds himself puzzled and dismayed by various developments, including Earth's dependence on robots and a medical procedure administered to every human that effectively neutralizes all aggressive impulses.

As always, Lem is dealing with an interesting theme in an absorbing was.  First-rate in all aspects, Return from the Stars is more intellectual science fiction from a very gifted writer.

Lewis Beale, Philadelphia Inquirer