Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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The ſecond, that
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Nulla res ſeipſam producat; [i. </
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<
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>e.]
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that nothing
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produceth it ſelf: from whence it follows, that it is not
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ble that the mover and moved ſhould be totally the ſame thing:
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And this is manifeſt, not onely in things that are moved by an
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trinſick mover; but it is gathered alſo from the principles
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pounded, that the ſame holdeth true in the natural motion
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dent on an intrinſick principle; otherwiſe, being that the mover,
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as a mover, is the cauſe, and the thing moved, as moved, is the
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effect, the ſame thing would totally be both the cauſe and effect.
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<
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>Therefore a body doth not move its whole ſelf, that is, ſo as
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that all moveth, and all is moved; but its neceſſary in the thing
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moved to diſtinguiſh in ſome manner the efficient principle of the
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motion, and that which with that motion is moved. </
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>The third
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Axiom is, that
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in rebus quæ ſenſui ſubjiciuntur, unum, quatenus
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unum, unam ſolam rem producat; i. </
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>e.
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That in things ſubject to
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the ſenſes, one, as it is one, produceth but onely one thing: That
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is, the ſoul in animals produceth its true divers operations, as the
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ſight, the hearing, the ſmell, generation,
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&c.
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but all theſe with
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ſeveral inſtruments. </
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>And in ſhort, in things ſenſible, the
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ty of operations, is obſerved to derive it ſelf from the diverſity
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that is in the cauſe. </
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<
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>Now if we put all theſe Axioms together, it
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will be a thing very manifeſt, that one ſimple body, as is the
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Earth, cannot of its own nature move at the ſame time with
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three motions, very divers: For by the foregoing ſuppoſitions,
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all moveth not its ſelf all; it is neceſfary therefore to diſtinguiſh
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in it three principles of its three motions; otherwiſe one and the
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ſame principle would produce many motions; but if it contein in
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it three principles of natural motions, beſides the part moved, it
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ſhall not be a ſimple body, but compounded of three principle
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movers, and of the part moved. </
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<
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>If therefore the Earth be a
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ple body, it ſhall not move with three motions; nay more, it will
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not move with any of thoſe which
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Copernicus
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aſcribeth to it, it
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being to move but with one alone, for that it is manifeſt, by the
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reaſons of
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Ariſtotle,
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that it moveth to its centre, as its parts do
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ſhew, which deſcend at right angles to the Earths Spherical
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Surface.</
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Arguments
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gainſt the Earths
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motion taken,
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ex
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rerum natura.</
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Three Axioms
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that are ſuppoſed
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manifeſt.
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A ſimple body
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as the Earth,
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not move with
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three ſeveral
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ons.
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The Earth
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not move with any
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of the motions
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gned it by
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cus.</
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<
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>SALV. </
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<
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>Many things might be ſaid, and conſidered touching
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the connection of this argument; but in regard that we can
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ſolve it in few words, I will not at this time without need inlarge
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upon it; and ſo much the rather, becauſe the ſame Author hath
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furniſhed me with an anſwer, when he ſaith that from one ſole
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ple in animals, there are produced divers operations; ſo that for
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the preſent my anſwer ſhall be, that in the ſame manner the Earth
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from one onely principle deriveth ſeveral operations.</
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Anſwers to the
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arguments
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ry to the Earths
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motion, taken
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ex
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rerum natura.</
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<
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>SIMP. </
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<
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>But this anſwer will not at all ſatisfie the Author who </
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