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§ 3.—Concerning the Inhabitants of Flatland · Part 1
Flatland: A Romance of Many Dimensions
p. 21§ 3.—Concerning the Inhabitants of Flatland
The greatest length or breadth of a full-grown inhabitant of Flatland may be estimated at about eleven of your inches. Twelve inches may be regarded as a maximum.
Our Soldiers and Lowest Classes of Workmen are Triangles with two equal sides, each about eleven inches long, and a base or third side so short (often not exceeding half an inch) that they form at their vertices a very sharp and formidable angle. Indeed when their bases are of the most degraded type (not more than the eighth part of an inch in size), they can hardly be distinguished from Straight Lines or Women; so extremely pointed are their vertices. With us, as with you, these Triangles are distinguished from others by being called “Isosceles”; and by this name I shall refer to them in the following pages.
Our Middle Class consists of Equilateral or Equal-sided Triangles.
Our Professional Men and Gentlemen are Squares (to which class I myself belong) and Five-sided figures or Pentagons.
Next above these come the Nobility, of whom there are several degrees, beginning at Six-sided Figures, or Hexagons, and from thence rising in the number of their sides till they receive the honourable title of Polygonal, or many-sided. Finally when the number of the sides becomes so numerous, and the sides themselves so small, that the figure cannot be distinguished from a circle, he is included in the Circular or Priestly order; and this is the highest class of all.
It is a Law of Nature with us that a male child shall have one more side than his father, so that each generation shall rise (as a rule) one step in the scale of development and nobility. Thus the son of a Square is a Pentagon; the son of a Pentagon, a Hexagon; and so on.
But this rule applies, not always to the Tradesman, and still less often to the Soldiers, and to the Workmen; who indeed can hardly be said to deserve the name of human Figures, since they have not all their sides equal. With them therefore the Law of Nature does not hold; and the son of an Isosceles (i.e. a Triangle with two sides equal) remains Isosceles still. Nevertheless, all hope is not shut out, even from the Isosceles, that his posterity may ultimately rise above his degraded condition. For, after a long series of military successes, or diligent and skilful labours, it is generally found that the more intelligent among the Artisan and Soldier classes manifest a slight increase of their third side or base, and a shrinkage of the two other sides. Intermarriages (arranged by the Priests) between the sons and daughters of these more intellectual members of the lower classes generally result in an offspring approximating still more to the type of the Equal-sided Triangle.
Socrates
Reading Flatland: A Romance of Many Dimensions · § 3.—Concerning the Inhabitants of Flatland · § 3.—Concerning the Inhabitants of Flatland · Part 1
Ask about a concept, passage, contradiction, or connection.
Socrates will begin with this book and its sources.About This Reading Edition
Edwin A. Abbott’s mathematical romance of a Square in a two-dimensional world, in the revised text of 1884, with an introduction, full notes and a chapter outline.
Historical Text
Edwin A. Abbott, Flatland: A Romance of Many Dimensions, first published by Seeley and Co., London, in 1884 under the pseudonym A Square. This supplied annotated edition follows the revised second edition of 1884, established from a modern transcription collated against that printing.
About This Edition
Revised second edition, Seeley and Co., London, 1884; supplied annotated Diotimos edition, 2026
Rights
Edwin A. Abbott’s historical text is in the public domain. Introduction, notes and apparatus © 2026 Diotimos Editions.