On the Greek stage a drama, or acted story, consisted in reality of three dramas, called together a trilogy, and performed consecutively in the course of one day.
Samuel Taylor ColeridgeTo carry feelings of childhood into the powers of adulthood, to combine the child's sense of wonder and novelty with the appearances which every day for years has rendered familiar, this is the character and privilege of genius, and one of the marks which distinguish it from talent.
Samuel Taylor Coleridge