Flatland

Why it’s on the list: A short novella narrated by a two-dimensional square who is visited by a sphere from the third dimension and cannot make his countrymen believe what he has seen — the standard classroom route to thinking about a fourth dimension, and a satire of Victorian hierarchy. The durable part is the argument about dimension, and about what a society does to the person who reports something it has no category for.

Where I heard about it

• Dissident Teacher — on A Library to Build Great Americans, a 468-title curriculum published by the Substack writer in December 2025, in the Ages 13-99+ band, opening its large Fiction grouping — unusual on such a list for being a mathematical parable rather than a novel of character.

About this edition

The author is Edwin Abbott Abbott (1838–1926), headmaster of the City of London School, who published the book pseudonymously as “A Square”; the list gives “Edwin Abbott”, which is his father’s name. Its treatment of Flatland’s women — line segments, kept apart and required to sound a continuous warning cry as they move — is the element most often singled out now, and whether Abbott was satirising his society’s assumptions or reproducing them is genuinely disputed.

Connections

• A Library to Build Great Americans — the list this came from.
• Edwin Abbott Abbott — the author, a classicist and schoolmaster who wrote it as “A Square”.
• Open Source Knowledge — the book as a teaching device that has outlived its own satire.