 Locke only hints at the conclusion that minds are material, but Cavendish by contrast is not concerned to pull any  punches.[14]  The thesis that matter thinks is an unrevisable element of her philosophical system. It is not an unwelcome appendage but instead is a straightforward consequence of tenets that she takes to be obvious. Cavendish is also cornering her opponent into explaining what the sense is in which minds move or are housed in our brains if they are not material. A figure like Leibniz is comfortable elucidating the nature of (immaterial) minds in terms of the language of mirrors, dizziness, and spatial perspective (Monadology, sections 83, 21, 57). Cavendish is insisting that the language of dimension and motion applies to bodies alone.