Willems has made a new generation of genuinely easy-to-read Easy Readers. Writing a great book using a very limited, repetitive vocabulary, of mostly one-syllable, consonant-vowel-consonant words, is very hard to do. Unfortunately, this does not keep a lot of writers from trying. Mo Willems succeeds. His Cat the Cat, Who Is That? is lovely, but my utter favorite is We Are in a Book!. Here two friends, a pig and an elephant, discuss several existential dilemmas in simple, clean, easy, and very funny (meta)text. Ages 5 through adult.