The book of historian Judith Flanders is devoted to how the alphabet ordered the world around us: combining the features of academic research and fascinating fiction, it talks about ways to organize our ideas about the surrounding reality using various symbolic systems, one way or another 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 such as Samuel Pips or Denis Didro, the ability to capture information and systematize the accumulated knowledge using the order in which the letters of human writing are placed. 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 short, before you, without exaggeration, is a treasure trove of knowledge from A to Z (or from A to Z).