An epigraph is a short quotation or saying at the beginning of a book, chapter, or poem. It is often used to set the tone or theme for the work that follows. Writers may choose an epigraph from a famous author, a literary work, or even a historical figure to provide context or insight into their own writing. Epigraphs can serve various purposes, such as highlighting a central idea or offering a contrasting perspective. They can also engage readers by prompting them to think critically about the relationship between the epigraph and the main text, enhancing the overall reading experience.