The work is divided into a preface written by Karine Chemla, a foreword by the author himself, an introduction, eight chapters, two appendices, several bibliographic elements, and a general index. The book is obviously written with a special pedagogical emphasis. To achieve its goal, Jens Høyrup overlooked nothing. In particular, several reading levels are clearly detailed for readers more or less initiated in mathematics and in Babylonian texts. The introduction immerses the reader very gradually in the historical, socio-cultural, and scientific context of Babylonian mathematics. Special inserts dedicated to the history of Mesopotamia are presented, including one on cuneiform writing and another on the explanation of the sexagesimal system. The first four chapters constitute the most extensive part of the book (approximately 100 pages). The author shares with us secrets from clay tablets that he studied over many years. These tablets are currently stored in, for example, the Louvre Museum in Paris (AO), the British Museum in London (BM), the Staatliche Museum in Berlin (VAT), or in collections of several universities, such as Yale (YBC) in the United States or Strasbourg (Str.) in France.