Historian Judith Flanders' book explores how the alphabet has ordered the world around us: combining academic research and engaging fiction, it tells about the ways in which our ideas about the reality around us are organized using various symbolic systems that are somehow related to the alphabet. The reader will have to make a real journey from the origins of human civilization to the 21st century to find out how, thanks to people like Samuel Pips or Denis Diderot, the ability to capture information and systematize the accumulated knowledge was formed using the order in which the letters of human writing are arranged. The title of the book reflects the universality of the author's approach: the reader will find in it an excursion into the history of linguistics, and a study of the emergence of catalogs, and an overview of the history of book publishing from the Library of Alexandria to Wikipedia. In a word, in front of you, without exaggeration, is a treasury of knowledge from A to Z (or from A to Z).