 Cavendish is clear in this passage that if a finite mind is able to subsume a being under its necessarily limited ideas and categories, then whatever that being is, it is not God. Our attempts to investigate the ways and nature of God are hopeless, and accordingly, we should restrict our faculties to a subject matter to which they are appropriately  fitted.[34]  Even then, we should still be appropriately humble and fallibilistic. Cavendish’s criticism of the scientist William Harvey is a case in point: