Philosophical Letters: or, modest Reflections upon some Opinions in Natural Philosophy. Duchess of Margaret Cavendish Newcastle

which is self-moving matter, And as there is no new Generation of Accidents, so there is neither a new Generation of Motions; wherefore when your Author says,[5] That, when the hand, being moved, moveth the pen, the motion doth not go out of the hand into the pen, for so the writing might be continued, though the hand stood still, but a new motion is generated in the pen, and is the pens motion: I am of his opinion, that the motion doth not go out of the hand into the pen, and that the motion of the pen, is the pens own motion; but I deny, that after holding the hand a little while still, and beginning to write again, a new motion of the pen is generated; for it is onely a repetition, and not a new generation, for the Hand, Pen and Ink, repeat but the same motion or action of writing: Besides, Generation is made by Connexion or Conjunction of parts, moving by consent to such or such Figures, but the motion of the Hand or the Pen is always one and the same; wherefore it is but the variation and repetition in and of the same motion of the Hand, or Pen, which may be continued in that manner infinitely, just as the same Corporeal Motions can make infinite variations and repetitions of one and the same Figure, repeating it as oft as they please, as also making Copy of Copy; And although I do not deny, but there are Generations in Nature, yet not annihilations or perishings, for if any one motion or figure should perish, the matter must perish also; and if any one part of matter can perish, all the matter in nature may perish also; and if there can any new thing be made or created in nature, which hath not been before, there may also be a new Nature, and so by perishings and new Creations, this World would not have continued an age; But surely whatsoever is in Nature, hath been existent always. Wherefore to conclude, it is not the generation and perishing of an Accident that makes its subject to be changed, but the production and alteration of the Form, makes it said to be generated or destroyed, for matter will change its motions and figures without perishing or annihilating; and whether there were words or not, there would be such causes and effects; But having not the art of Logick to dispute with artificial words, nor the art of Geometry to demonstrate my opinions by Mathematical Figures, I fear they will not be so well received by the Learned; However, I leave them to any mans unprejudiced Reason and Judgment, and devote my self to your service, as becomes,

      Madam,

      Your Ladiships

      humble and faithful Servant.

[1] Elem. of Philos. c. 8. art. 2.

[2] Art. 3.

[3] Art. 20.

[4] Art. 2.

[5] Art. 21.

XVII.

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      MADAM,

Your Author concerning Place and Magnitude says,[1], that Place is nothing out of the mind, nor Magnitude any thing within it; for Place is a meer Phantasme of a body of such quantity and figure, and Magnitude a peculiar accident of the body; but this doth not well agree with my reason, for I believe that Place, Magnitude and Body are but one thing, and that Place is as true an extension as Magnitude, and not a feigned one; Neither am I of his opinion, that Place is Immoveable, but that place moves, according as the body moveth, for not any body wants place, because place and body is but one thing, and wheresoever is body, there is also place, and wheresoever is place, there is body, as being one and the same; Wherefore Motion cannot be a relinquishing of one place and acquiring another,[2] for there is no such thing as place different from body, but what is called change of place, is nothing but change of corporeal motions; for, say an house stands in such a place, if the house be gone, the place is gone also, as being impossible that the place of the house should remain, when the house is taken away; like as a man when he is gone out of his chamber, his place is gone too; 'Tis true, if the ground or foundation do yet remain, one may say, there stood such an house heretofore, but yet the place of the house is not there really at that present, unless the same house be built up again as it was before, and then it hath its place as before; Nevertheless the house being not there, it cannot be said that either place or house are annihilated, viz., when the materials are dissolved, no not when transformed into millions of several other figures, for the house remains still in the power of all those several parts of matter; and as for space, it is onely a distance betwixt some parts or bodies; But an Empty place signifies to my opinion Nothing, for if place and body are one and the same, and empty is as much as nothing; then certainly these two words cannot consist together, but are destructive to one another. Concerning, that your Author says,[3] Two bodies cannot be together in the same place, nor one body in two places at the same time, is very true, for there are no more places then bodies, nor more bodies then places, and this is to be understood as well of the grosser, as the purest parts of nature, of the mind as well as of the body, of the rational and sensitive animate matter as well as of the inanimate, for there is no matter, how pure and subtil soever, but is imbodied, and all that hath body hath place. Likewise I am of his opinion,[4] That one body hath always one and the same magnitude; for, in my opinion, magnitude, place and body do not differ, and as place, so magnitude can never be separated from body. But when he speaks of Rest, I cannot believe there is any such thing truly in Nature, for it is impossible to prove, that any thing is without Motion, either consistent, or composing, or dissolving, or transforming motions, or the like, although not altogether perceptible by our senses, for all the Matter is either moving or moved, and although the moved parts are not capable to receive the nature of self-motion from the self-moving parts, yet these self-moving parts, being joyned and mixt with all other parts of the moved matter, do always move the same; for the Moved or Inanimate part of Matter, although it is a Part of it self, yet it is so intermixt with the self-moving Animate Matter, as they make but one Body; and though some parts of the Inanimate may be as pure as the Sensitive Animate Matter, yet they are never so subtil as to be self-moving; Wherefore the Sensitive moves in the Inanimate, and the Rational in the Sensitive, but often the Rational moves in it self. And, although there is no rest in nature, nevertheless Matter could have been without Motion, when as it is impossible that Matter could be without place or magnitude, no more then Variety can be without motion; And thus much at this present: I conclude, and rest,

      Madam,

      Your Faithful Friend

      and Servant.

[1] Part. 2. c. 8. a. 5.

[2] Art. 10.

[3] Art. 8.

[4] Art. 5.

XVIII.

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      MADAM,

Passing by those Chapters of your Authors, that treat of Power and Act, Identy and Difference,

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