something, or nothing, there being no _medium_ between, in Nature. But pray mistake me not, _Madam_, when I say Immaterial is nothing; for I mean nothing Natural, or so as to be a part of Nature; for God forbid, I should deny, that God is a Spiritual Immaterial substance, or Being; neither do I deny that we can have an Idea, notion, conception, or thought of the existence of God; for I am of your _Authors_ opinion, That there is no Man under the cope of Heaven, that doth not by the light of Nature, know, and believe there is a God; but that we should have such a perfect Idea of God, as of any thing else in the World, or as of our selves, as your _Author_ says, I cannot in sense and reason conceive to be true or possible. Neither am I against those Spirits, which the holy Scripture mentions, as Angels and Devils, and the divine Soul of Man; but I say onely, that no Immaterial Spirit belongs to Nature, so as to be a part thereof; for Nature is Material, or Corporeal; and whatsoever is not composed of matter or body, belongs not to Nature; nevertheless, Immaterial Spirits may be in Nature, although not parts of Nature. But there can neither be an Immaterial Nature, nor a Natural Immaterial; Nay, our very thoughts and conceptions of Immaterial are Material, as made of self-moving Matter. Wherefore to conclude, these opinions in Men proceed from a Vain-glory, as to have found out something that is not in Nature; to which I leave them, and their natural Immaterial Substances, like so many Hobgoblins to fright Children withal, resting in the mean time, Madam, _Your faithful Friend,_ _and Servant._ [1] _Antid. lib._ 1. _c._ 11. XIX. _MADAM,_