Books are our first and most lasting form of information technology. Books preserve ideas, yes, but they also provoke new ones— they are true tools for thinking. In The Idea Machine , Joel J. Miller shows that books are one of the most important but overlooked factors in the making of our contemporary world. And they still have lessons to teach us. Polls indicate reading is on the decline, but as we deal with concerns about artificial intelligence and social and political division, the history of the book offers a path of understanding and patterns for engagement. They can even help us navigate what’s coming next. Starting with the surge of book culture in ancient Athens and then moving through the centuries, from monks and militaries to rebellions and the Renaissance, and even to more modern-day implications of books as tools of liberation and the novel’s impact on our humanity, Miller highlights the features and functions that make books indispensable to cultural evolution. Subject to its own periods of technological upheaval and social unrest, the history of the book can point us away from failed past responses and toward more fruitful adaptations that will benefit us all. The Idea Machine  reframes the history of the book as the eye-opening story of humanity’s first mobile information device. Books do more than record thinking; they serve as tools to facilitate it. More than a history of the book as an object or a simple consideration of the literature it has contained, The Idea Machine  is the history of the book as a technology that transformed the peoples and societies that embraced it, and which maintains a vital role in a world where technological advancements seem to render it obsolete and ideological division might render our shared future untenable.