Flatland: A Romance of Many Dimensions by Edwin Abbot Abbott
Flatland: A Romance of Many Dimensions is the timeless memoir of a sentient being.
Edwin Abbot Abbott (born Marylebone, Middlesex, England, 1838–1926) was the headmaster of the City of London School and a scholar who wrote on the lives of saints, Shakespeare, and various philosophical matters. He is most remembered for an aberrant work, his novella Flatland (1884), a proto-sci-fi critique of Victorian society that conceived of a fourth dimension in advance of the theory of relativity.