ABSTRACT
This chapter examines the epistemologies of Margaret Cavendish, Mary Astell, and Mary Shepherd. Cavendish argues that minds come to have knowledge via two routes: sensory perception and reason. For Cavendish, these two faculties of knowledge differ not in kind but in degree: they work to produce ideas in the same way, but ideas that come from reason are less trustworthy than those from the senses. While Astell also acknowledges a distinction between sense perception and reason as faculties of cognition, she claims that ideas that come from the senses cannot properly be called knowledge. In contrast, reason traffics in ideas that are wholly non-sensory and allow for a level of certainty that counts as knowledge in the strict sense. Shepherd locates a position that lies in between that of Cavendish and Astell. Like Astell, Shepherd argues that we have limited knowledge from sense perception, and we have absolutely certain knowledge of some things through a non-sensory faculty of reason – for example, that changes in a body cannot occur without a cause, and that things cannot be annihilated or come from nothing. However, for Shepherd, the scope of human knowledge is quite limited.
