The word eunoia means beautiful thinking and is the shortest word in the English language that contains all five vowels.
The book is a lipogram, which is a form used by many Oulipo poets. Each vowel has its own chapter—no other vowels will appear in it. As a result the vowels emerge from their chapters with their own personality (i is more light-hearted, for example). It took Bök seven years to write the 2002 Griffin Poetry Prize winner.
Writers often use words to convey meaning to readers. But words are not always a means to an end. The next time you find yourself struggling to find meaning in piece of writing, stop. Let the words be the meaning.