* The person: Don Quixote is the main character of the book *Don Quixote*, written by Miguel de Cervantes. He's a fictional character, an idealistic and eccentric knight-errant who sets out on adventures, believing himself to be living in a chivalric age.
* The book: *Don Quixote* is a novel written by Miguel de Cervantes. It tells the story of Don Quixote and his adventures. The full title is *The Ingenious Gentleman Don Quixote of La Mancha*, and it's considered one of the most important works of literature ever written.