A fable differs from a parable in that the latter excludes animals, plants, inanimate objects, and forces of nature as actors that assume speech or other powers of humankind.
Usage has not always been so clearly distinguished. In the King James Version of the New Testament, "μῦθος" ("mythos") was rendered by the translators as "fable" in the First Epistle to Timothy, the Second Epistle to Timothy, the Epistle to Titus and the First Epistle of Peter.A person who writes fables is a fabulist.
The fable is one of the most enduring forms of folk literature, spread abroad, modern researchers agree, less by literary anthologies than by oral transmission. Fables can be found in the literature of almost every country.
The varying corpus denoted Aesopica or Aesop's Fables includes most of the best-known western fables, which are attributed to the legendary Aesop, supposed to have been a slave in ancient Greece around 550 BCE. When Babrius set down fables from the Aesopica in verse for a Hellenistic Prince "Alexander," he expressly stated at the head of Book II that this type of "myth" that Aesop had introduced to the "sons of the Hellenes" had been an invention of "Syrians" from the time of "Ninos" (personifying Nineveh to Greeks) and Belos ("ruler"). Epicharmus of Kos and Phormis are reported as having been among the first to invent comic fables. Many familiar fables of Aesop include "The Crow and the Pitcher", "The Tortoise and the Hare" and "The Lion and the Mouse". In ancient Greek and Roman education, the fable was the first of the progymnasmata—training exercises in prose composition and public speaking—wherein students would be asked to learn fables, expand upon them, invent their own, and finally use them as persuasive examples in longer forensic or deliberative speeches.