This paper investigates the development of Hobbes’s theory of imagination and its unique intervention in the scientific debates of the seventeenth century. I argue that this intervention is designed to solve a tension between Hobbes’s scientific and political commitments. His scientific commitments led him to take the imagination seriously. While unorthodox in many ways, Hobbes was working within the predominant scientific framework of his time, which can be traced back to Aristotle and Galen. The same framework, however, was used for (...) naturalistic explanations for prophecy. This posed a problem for Hobbes, who was equally committed to the advances of science and to guarding against the political threat posed by prophets. I argue that Hobbes’s theory of imagination solves this tension by constructing a scientific account of imagination that is loyal to the leading scientific ideas while ruling out any potential use of imagination in the natural explanation of prophecy. (shrink)