Duchess of Margaret Cavendish Newcastle, Philosophical Letters: or, modest Reflections upon some Opinions in Natural Philosophy
“ Neither can I admit in reason that the Elements should be called, first, pure, and simple beings; we might as well call all other creatures, first, pure, and simple beings: for although the word Element sounds as much as Principle, yet they are in my reason no more Principles of Nature, then other Creatures are, there being but one Principle in Nature, out of which all things are composed, viz. the onely matter, which is a pure and simple corporeal substance ”
