The word 'eunoia', which literally means 'beautiful thinking', is the shortest word in English that contains all five vowels. Directly inspired by the Oulipo (l'Ouvroir de Littérature Potentielle), a French writers' group interested in experimenting with different forms of literary constraint, Eunoia is a five-chapter book in which each chapter is a univocal lipogram (the first chapter has A as its only vowel, the second chapter only E, etc.). Each vowel takes on a distinct personality - the I is egotistical and romantic, the O jocular and obscene, the E elegaic and epic (Bök actually retells the entire Iliad in Chapter E; you have to read it to believe it).