Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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<
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>SAGR. </
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<
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>In my judgment this is found. </
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<
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>Make the Earth the
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Primum mobile,
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that is, make it turn round its own
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axis
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in twenty
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four hours, and towards the ſame point with all the other Spheres;
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and without participating this ſame motion to any other Planet or
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Star, all ſhall have their riſings, ſettings, and in a word, all their
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other appearances.</
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<
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>SIMPL. </
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<
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>The buſineſs is, to be able to make the Earth move
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without athouſand inconveniences.</
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<
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>SALV. </
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<
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>All the inconveniences ſhall be removed as faſt as you
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propound them: and the things ſpoken hitherto are onely the
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primary and more general inducements which give us to believe
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that the diurnal converſion may not altogether without
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lity be applyed to the Earth, rather than to all the reſt of the
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niverſe: the which inducements I impoſe not upon you as
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lable Axioms, but as hints, which carry with them ſomewhat of
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likelihood. </
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<
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>And in regard I know very well, that one ſole
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periment, or concludent demonſtration, produced on the contrary
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part, ſufficeth to batter to the ground theſe and a thouſand other
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probable Arguments; therefore it is not fit to ſtay here, but proceed
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forwards and hear what
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Simplicius
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anſwereth, and what greater
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probabilities, or ſtronger arguments he alledgeth on the contrary.</
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One ſingle
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periment, or ſound
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demonſtration
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tereth down all
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guments meerly
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probable.
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<
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>SIMPL. </
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<
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>I will firſt ſay ſomething in general upon all theſe
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ſiderations together, and then I will deſcend to ſome particulars.
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</
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<
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>It ſeems that you univerſally bottom all you ſay upon the greater
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ſimplicity and facility of producing the ſame effects, whilſt you
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hold, that as to the cauſing of them, the motion of the Earth
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lone, ſerveth
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as well
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as that of all the reſt of the World, the Earth
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deducted: but as to the operations, you eſteem that much eaſier
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than this. </
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<
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>To which I reply, that I am alſo of the ſame opinion,
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ſo long as I regard my own not onely finite, but feeble power;
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but having a reſpect to the ſtrength of the
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Mover,
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which is
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finite, its no leſſe eaſie to move the Univerſe, than the Earth,
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yea than a ſtraw. </
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<
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>And if his power be infinite, why ſhould he not
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rather exerciſe a greater part thereof than a leſſe? </
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<
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>Therefore,
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I hold that your diſcourſe in general is not convincing.</
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Of an infinite
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power one would
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think a greater
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part ſhould rather
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be imploy'd than a
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leſſe.
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<
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>SALV. </
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>
<
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>If I had at any time ſaid, that the Univerſe moved not
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for want of power in the
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Mover,
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I ſhould have erred, and your
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reproof would have been ſeaſonable; and I grant you, that to
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an infinite power, it is as eaſie to move an hundred thouſand, as
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one. </
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>
<
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>But that which I did ſay, concerns not the Mover, but
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ly hath reſpect to the Moveables; and in them, not onely to
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their reſiſtance, which doubtleſſe is leſſer in the Earth, than in
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the Univerſe; but to the many other particulars, but even now
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conſidered. </
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>
<
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>As to what you ſay in the next place, that of an
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finite power it is better to exerciſe a great part than a ſmall: I </
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