Sol Stein, in Stein on Writing, notes that without a solid understanding of point of view--meaning the character whose eyes are observing the action, the perspective from which a story is told--the writer cannot fully exploit his talent. Stein had this advice for the beginning novelist: "Do not mix points of view within the same scene, chapter, or even the same novel. It is unsettling to the reader. If you mix points of view, the author's authority seems to dissolve. The writing seems arbitrary rather than controlled. Sticking to a point of view intensifies the experience of a story. A wavering or uncertain point of view will diminish the experience of the reader."