I consider Robert Heinlein’s most fascinating novel to be his prescriptive utopia Beyond This Horizon. (A prescriptive utopia is where an author “prescribes” what he or she believes a better civilization would look like.) While Heinlein did opine, extensively, about society in many books, from Starship Troopers to Glory Road, it is in Beyond This Horizon (BTH) that you’ll find him clearly stating This Is The Way Things Ought To Be. And it turns out to be a fascinating, surprisingly nuanced view of our potential future.
I haven’t read Beyond This Horizon, but it seems like an odd mix of ideas: eugenics leading to superhumans with telepathy; an armed, and thus polite, society; a post-scarcity economy, where work has become optional; and reincarnation.
Apparently Heinlein’s approach to eugenics is now known as the Heinlein solution:
I was amazed by many other aspects of this wonderful book-within-a-book, especially by Heinlein’s startlingly simple suggestion for how to deal with the moral quandaries of genetic engineering — what’s now called the “Heinlein Solution” — to allow couples to select which sperm and ova they want to combine into a child, but to forbid actually altering the natural human genome. Thus, the resulting child, while “best” in many ways (free of any disease genes, etc), will still be one that the couple might have had naturally. Gradual human improvement, without any of the outrageously hubristic meddling that wise people rightfully fear. It is a proposal so insightful that biologists 40 years later are only now starting to discuss what may turn out to be Heinlein’s principal source of fame, centuries from now.