Epigraph
The quotation placed at the head of a book or chapter, offering a reading key — not to be confused with the epitaph.
The epigraph is the quotation placed at the head of a book, part or chapter: a few borrowed words — verse, sentence, proverb, sometimes an invented source — setting the tone or offering a reading key. It tells the reader: here is the patronage, the conversation, this text belongs to.
Its uses range from wink to framework: some novels build a second narrative through chapter epigraphs alone, real or fictional (the imaginary encyclopedia heading every chapter of Dune is the canonical example). Two practical cautions: verify the quotation's accuracy and attribution — and know that reproducing protected excerpts, however brief, falls under quotation right, whose conditions are assessed case by case.
Example
Every chapter of Dune opens on an excerpt from Princess Irulan's writings — a fictional epigraph building the myth.