A. A. Milne set. Milne lived on the northern edge of the forest at Cotchford Farm, , and took his son walking there. E. H. Shepard drew on the landscapes of Ashdown Forest as inspiration for many of the illustrations he provided for the Pooh books. The adult Christopher Robin commented: "Pooh's Forest and Ashdown Forest are identical." Popular tourist locations at Ashdown Forest include: "Galleon's Lap", "The Enchanted Place", the "Heffalump Trap" and "Lone Pine", "Eeyore’s Sad and Gloomy Place", and the wooden "Pooh Bridge" where Pooh and Piglet invented Poohsticks. Not yet known as Pooh, he made his first appearance in
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