Don Quixote (Alonso Quixano), the protagonist of the novel, is a retired country gentleman nearing fifty years of age, living in an unnamed section of La Mancha with his niece and housekeeper. While mostly a rational man of sound reason, his reading of books of chivalry in excess has had a profound effect on him, leading to the distortion of his perception and the wavering of his mental faculties. In essence, he believes every word of these books of chivalry to be true though, for the most part, the content of these books is clearly fiction. Otherwise, his wits are intact.