Chapter 7 re-examines the ‘book-farming’ controversy of the late eighteenth century. It first highlights the precarious power of book-knowledge, which offered mastery to an educated landowning class, but was a poor substitute for experience. The analysis distinguishes between a weak and a strong critique of agricultural books. The weak critique expressed by authors themselves condemned an overly theoretical approach or the overly speculative ideas in books. The strong critique was expressed in the reported hostility of working farmers, which was fundamentally suspicious of the value of learning about farming from books and challenged the proclaimed authority of writers. It argues that the strong opposition to book-farming can only be understood by considering the balance of power within agricultural labour relations. Hostility to book-farming was a form of ‘everyday resistance’ to the subordination of customary knowledge and the use of books as tools of management in the running of estates and large farms.