The book includes a piece of satire on sexual morality. An unspecified future human species (one of the Eighteenth Men's predecessors on Neptune) is presented as having an attitude to nutrition analogous to the First Men's sexual puritanism. Hence they invent mouth aprons and food privies, while having sex in public

DigiCat Publishing presents to you this special edition of "Odd John" by Olaf Stapledon. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.

Last Men in London (1932) is a science fiction novel by Olaf Stapledon. The narrator is the same member of the eighteenth and final human species who purportedly induced Stapledon to write Last and First Men. Last Men in London is the story of this being's exploration of the consciousness of a present-day Englishman named Paul, from childhood through service with an ambulance crew in the First World War (mirroring Stapledon's own personal history) to adult life as a schoolteacher faced with a "submerged superman" in his class nicknamed Humpty. The inadequacies of Paul's character, the various dilemmas he has to face during his life, and the occasional influence of the advanced being who shares his experiences, provide Stapledon with a semi-autobiographical platform on which to expound his philosophical and moral beliefs.