This book introduced me to the concept of imagination through literature. The book plays out like a silent film with no English intertitles. The story is already told through pictures, so it's up to you to determine what each character is thinking or saying. That is where the imagination part comes in. I believe that the story is better told without words. To have words in the book would destroy any type of imagination you would have. David Wiesner wanted us to use our imagination in books like this and Tuesday. I highly recommend it.