Galilei, Galileo
,
The systems of the world
,
1661
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inſtead of
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Ariſtotle,
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to prove that they do not.</
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The anſwer to
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Ariſtotles
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firſt
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gument.
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<
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>SIMPL. </
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<
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>This is proved by
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Ariſtotle
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in the ſame place, when he
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ſaith, that the natural motion of the parts is the right motion
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downwards to the centre of the Univerſe; ſo that the circular
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motion cannot naturally agree therewith.</
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<
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>SALV. </
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<
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>But do not you ſee, that thoſe very words carry in them
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a confutation of this ſolution?</
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<
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>SIMPL. How? </
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<
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>and where?</
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<
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>SALV. </
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<
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>Doth not he ſay that the circular motion of the Earth
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would be violent? </
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>and therefore not eternal? </
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>and that this is
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ſurd, for that the order of the World is eternal?</
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<
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>SIMPL. </
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<
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>He ſaith ſo.</
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>SALV. </
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<
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>But if that which is violent cannot be eternal, then by
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converſion, that which cannot be eternal, cannot be natural: but
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the motion of the Earth downwards cannot be otherwiſe eternal;
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therefore much leſſe can it be natural: nor can any other motion
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be natural to it, ſave onely that which is eternal. </
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<
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>But if we make
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the Earth move with a circular motion, this may be eternal to it,
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and to its parts, and therefore natural.</
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That which is
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violent, cannot be
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eternal, and that
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which cannot be
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ternal, cannot be
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natural.
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<
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>SIMPL. </
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<
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>The right motion is moſt natural to the parts of the
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Earth, and is to them eternal; nor ſhall it ever happen that they
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move not with a right motion; alwayes provided that the
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diments be removed.</
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<
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>SALV. </
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<
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>You equivocate
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Simplicius
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; and I will try to free you
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from the equivoke. </
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<
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>Tell me, therefore, do you think that a
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Ship which ſhould ſail from the Strait of
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Gibralter
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towards
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ſtina
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can eternally move towards that Coaſt? </
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<
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>keeping alwayes an
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equal courſe?</
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<
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>SIMPL. </
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<
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>No doubtleſſe.</
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<
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>SALV. </
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<
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>And why not?</
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<
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>SIMPL. </
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<
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>Becauſe that Voyage is bounded and terminated
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tween the
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Herculean
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Pillars, and the ſhore of the
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Holy-land
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; and
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the diſtance being limited, it is paſt in a finite time, unleſſe one by
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returning back ſhould with a contrary motion begin the ſame
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age anew; but this would be an interrupted and no continued
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motion.</
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<
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<
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>SALV. </
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<
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>Very true. </
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<
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>But the Navigation from the Strait of
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galanes
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by the
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Pacifick
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Ocean, the
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Moluccha's,
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the Cape
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di buona
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Speranza,
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and from thence by the ſame Strait, and then again by
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the
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Pacifick
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Ocean, &c. </
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<
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>do you believe that it may be
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tuated?</
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</
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<
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>SIMPL. </
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<
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>It may; for this being a circumgyration, which
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turneth about its ſelf, with infinite replications, it may be
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ated without any interruption.</
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<
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<
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>SALV. </
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<
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>A Ship then may in this Voyage continue ſailing
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nally.</
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