Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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buckler of the little Treatiſe of
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Concluſions,
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or Diſquiſitions
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thematical, the oppugnations of which it would be good to
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gin to produce.</
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<
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>SIMP. </
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<
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>I will, if you ſo pleaſe, reſerve them to the laſt, as thoſe
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that are of lateſt invention.</
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<
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>SALV. </
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<
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>It will therefore be neceſſary, that in conformity to the
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method hitherto obſerved, you do orderly, one by one, propound
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the arguments, on the contrary, aſwell of
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Ariſtotle,
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as of the
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ther ancients, which ſhall be my task alſo, that ſo nothing may
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ſcape our ſtrict conſideration and examination; and likewiſe
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gredus,
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with the vivacity of his wit, ſhall interpoſe his thoughts, as
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he ſhall finde himſelf inclined.</
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<
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>SAGR. </
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<
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>I will do it with my wonted freedome; and your
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mands ſhall oblige you to excuſe me in ſo doing.</
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<
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>SALV. </
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<
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>The favour will challenge thanks, and not an excuſe.
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<
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>But now let
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Simplicius
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begin to propoſe thoſe doubts which
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ſwade him from believing that the Earth, in like manner, as the
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other pianets, may move round about a fixed centre.</
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<
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>SIMP. </
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<
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>The firſt and greateſt difficulty is the repugnance and
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incompatibility that is between being in the centre, and being far
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from it; for if the Terreſtrial Globe were to move in a year by
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the circumference of a circle, that is, under the Zodiack, it is
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poſſible that it ſhould, at the ſame time, be in the centre of the
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diack; but that the Earth is in the ſaid centre
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Aristotle, Ptolomy,
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and others have many wayes proved.</
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<
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>SALV. </
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<
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>You very well argue, aud there is no queſtion but that
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one that would make the Earth to move in the circumference of a
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circle, muſt firſt of neceſſity prove, that it is not in the centre of
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that ſame circle; it now followeth, that we enquire, whether the
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Earth be, or be not in that centre, about which, I ſay, that it
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neth, and you ſay that it is fixed; and before we ſpeak of this, it
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is likewiſe neceſſary that we declare our ſelves, whether you and I
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have both the ſame conceit of this centre, or no. </
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<
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>Therefore tell
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me, what and where is this your intended centre?</
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<
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>SIMP. </
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<
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>When I ſpeak of the centre, I mean that of the
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verſe, that of the World, that of the Starry Sphere.</
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<
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>SALV. </
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<
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>Although I might very rationally put it in diſpute,
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ther there be any ſuch centre in nature, or no; being that neither
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you nor any one elſe hath ever proved, whether the World be
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nite and figurate, or elſe infinite and interminate; yet nevertheleſs
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granting you, for the preſent, that it is finite, and of a terminate
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Spherical Figure, and that thereupon it hath its centre; it will be
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requiſite to ſee how credible it is that the Earth, and not rather
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ſome other body, doth poſſeſſe the ſaid centre.</
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It hath not been
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hitherto proved by
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any, whether the
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World be finite or
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infinite.
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<
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<
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>SIMP. </
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<
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>That the world is finite, terminato, and ſpherical,
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Ari-
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</
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</
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</
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