proceeds from the separation or abstraction of Motion from Matter, _viz._ that man thinks matter and motion to be dividable from each other, and believes motion to be a thing by its self, naming it an Immaterial thing, which has a being, but not a bodily substance: But various and different effects do not prove a different Matter or Cause, neither do they prove an unsetled Cause, onely the variety of Effects hath obscured the Cause from the several parts, which makes Particular Creatures partly Ignorant, and partly knowing. But in my opinion, Nature is material, and not any thing in Nature, what belongs to her, is immaterial; but whatsoever is Immaterial, is Supernatural, Therefore Motions, Forms, Thoughts, Ideas, Conceptions, Sympathies, Antipathies, Accidents, Qualities, as also Natural Life, and Soul, are all Material: And as for Colours, Sents, Light, Sound, Heat, Cold, and the like, those that believe them not to be substances or material things, surely their brain or heart (take what place you will for the forming of Conceptions) moves very Irregularly, and they might as well say, Our sensitive Organs are not material; for what Objects soever, that are subject to our senses, cannot in sense be denied to be Corporeal, when as those things that are not subject to our senses, can be conceived in reason to be Immaterial? But some Philosophers striving to express their wit, obstruct reason; and drawing Divinity to prove Sense and Reason, weaken Faith so, as their mixed Divine Philosophy becomes meer Poetical Fictions, and Romancical expressions, making material Bodies immaterial Spirits, and immaterial Spirits material Bodies; and some have conceived some things neither to be Material nor Immaterial but between both. Truly, _Madam_, I wish their Wits had been less, and their Judgments more, as not to jumble Natural and Supernatural things together, but to distinguish either clearly, for such Mixtures are neither Natural nor Divine; But as I said, the Confusion comes from their too nice abstractions, and from the separation of Figure and Motion from Matter, as not conceiving them individable; but if God, and his servant Nature were as Intricate and Confuse in their Works, as Men in their Understandings and Words, the Universe and Production of all Creatures would soon be without Order and Government, so as there would be a horrid and Eternal War both in Heaven, and in the World, and so pittying their troubled Brains, and wishing them the Light of Reason, that they may clearly perceive the Truth, I rest Madam, _Your real Friend_ _and faithful Servant._ III. _MADAM,_