An epigraph is a quotation or phrase, usually at the beginning of a literary work.
For example, the epigraph of E. L. Doctorow's "Ragtime" reads: "Do not play this piece fast. It is never right to...
The epigraph given by the author was from Plato, and said in part:"Any one who has common sense will remember that the bewilderments of the eye are of two kinds, and arise from two causes, either...