An exemplum (Latin for "example", pl. exempla, exempli gratia = "for example", abbr.: e.g.) is a moral anecdote, brief or extended, real or fictitious, used to illustrate a point. The word is also used to express an action performed by another and used as an example or model.
This genre sprang from the above, in classical, medieval and Renaissance literature, consisting of lives of famous figures, and using these (by emphasizing good or bad character traits) to make a moral point.
Collections of Exempla helped medieval preachers to adorn their sermons, to emphasize moral conclusions or illustrate a point of doctrine. The subject matter could be taken from fables, folktales, legends or real history. Jacques de Vitry's book of exempla, c. 1200, and Odo of Cheriton's Parabolae (after 1225) were famous Mediaeval collections aimed particularly at preachers. Geoffrey Chaucer's The Miller's Prologue and Tale became a vivid satire on this genre. There were also notable lay writers of moral tales, such as the 13th century Der Stricker and the 14th century Juan Manuel, Prince of Villena (Tales of Count Lucanor). Examples dealing with historical figures include:
The Norton Anthology of Western Literature includes three exempla (singular, exemplum), stories that illustrate a general principle or underscore a moral lesson: "The Two City Dwellers and the Country Man" and "The King's Tailor's Apprentice" (both from The Scholar's Guide) and "The Cursed Dancers of Colbeck."
In "The Two City Dwellers and the Country Man," told by the father, the three traveling companions of the tale's title are on a pilgrimage to Mecca. Near their destination, their provisions are nearly depleted, and the two city dwellers attempt to cheat the country man by telling him that whoever of them dreams the most extraordinary dream shall get the last of their bread.