The book begins by examining Dummett's views on language. Only against that setting can one fully appreciate his conception of the realism issue. With this in place, Weiss returns to Dummett's views on the nature of meaning and understanding to unfold his challenge to realism. Weiss devotes the remainder of the book to examining the anti-realist position. He discusses anti-realist theories of meaning and then investigates anti-realism's revisionary consequences. Finally, he engages with Dummett's discussion of two difficult challenges for the anti-realist: the past and mathematics.