This somewhat idiosyncratic collection consists of excerpts of three of Gunn's novels, which stand well enough alone; their tone is one of slightly old-fashioned cautious optimism that occasionally verges on the sentimental. An astronaut gives up his life -- or at least everything that matters about it -- for the good of the space program. A future society based on hedonistic principles -- the greatest happiness for the greatest number -- begins to come undone at the seams. A doctor discovers an elixir of life and loses it again on purpose. Another doctor decides to be a healer rather than a technician performing only for the big buck. No rough edges, no surprises.