Renouvier, Charles. Uchronie (l'utopie dans l'histoire), esquisse historique apocryphe du développement de la civilisation européenne tel qu'il n'a pas été, tel qu'il aurait pu être
Title trans.: Uchronia (Utopia in History), an Apocryphal Sketch of the Development of European Civilization Not as It Was But as It Might Have Been
Divergence: c 165 CE
What if: Marcus Aurelius arranged for the philosopher Avidius Cassius to succeed him as emperor of Rome.
Summary: Cassidius' rule leads to breakthroughs in the arts and sciences, and also avert the spread of Chrisitianity in the east because Constantine never exists.
Published: Bureau de la Critique Philosophique 1876; and Alcan 1901.
Published: As Uchronie 1876, Fayard 1988 (2213020582).
Published: Revision of "[[title unknown]]" in Revue philosophique et religieuse [[date unknown]] 1857.
Original in: French.
Translation: Spanish by José Ferrater Mora as Ucronía, la utopía en la historia, Losada 1945.