The Tales of Beedle the Bard by Albus Dumbledore, former headmaster of Hogwarts School of Witchcraft and Wizardry. It is described as a popular collection of Wizarding children's fairy tales, so that while Ron Weasley is familiar with the stories, Harry Potter and Hermione Granger had not previously heard of them due to their non-magical upbringing. The book Hermione receives in Dumbledore's will is a copy of the original edition of the fictional book. It is described as an ancient-looking small book with its binding "stained and peeling in places". In the novel it is also said the book has a title on its cover, written
What Is Mathematics? alone held the copyright for the book. This resulted in Robbins receiving a smaller share of the royalties. Michael Katehakis remembers Robbins' interest in the literature and Tolstoy in particular and he is convinced that the title of the book is most likely due to Robbins, who was inspired by the title of the essay What is Art? by Leo Tolstoy. Robbins did the same in the book " Great Expectations : The Theory of Optimal Stopping " he co-authored with Yuan-Shih Chow and David Siegmund, where one can not miss the connection with the title of the novel "Great