Galilei, Galileo, The systems of the world, 1661
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              <s>
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              of natural bodies ſome are moveable by nature, and others
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              veable; eſpecially having before defined Nature, to be the
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              ciple of Motion and Reſt.</s>
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            <p type="margin">
              <s>
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                <emph type="italics"/>
              Finite and
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              nate circular
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              tions diſorder not
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              the parts of the
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              World.
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              <s>
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              In the circular
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              tion, every point in
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              the circumference
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              is the begining and
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              end.
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              </s>
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            <p type="margin">
              <s>
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              Circular motion
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              onely is uniform.
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            <p type="margin">
              <s>
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              Circular motion
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              may be continued
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              perpetually.
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            <p type="margin">
              <s>
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              Right motion
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              not naturally be
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              perpetual.
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              <s>
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              Right motion
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              ſigned to natural
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              bodies, to reduce
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              them to perfect
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              der, when removed
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              from their places.
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              </s>
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            <p type="margin">
              <s>
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              Reſt onely, and
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              circular motion are
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              apt to conſerve
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              der.
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              <s>SIMPL.
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              Ariſtotle,
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              though of a very perſpicacious wit, would
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              not ſtrain it further than needed: holding in all his
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              tations, that ſenſible experiments were to be preferred before
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              any reaſons founded upon ſtrength of wit, and ſaid thoſe which
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              ſhould deny the teſtimony of ſenſe deſerved to be puniſhed with
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              the loſs of that ſenſe; now who is ſo blind, that ſees not the
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              parts of the Earth and Water to move, as being grave,
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              ly downwards, namely, towards the centre of the Univerſe,
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              ſigned by nature her ſelf for the end and term of right motion
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              deorſùm
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              ; and doth not likewiſe ſee the Fire and Air to move
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              right upwards towards the Concave of the Lunar Orb, as to the
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              natural end of motion
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              ſurſùm
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              ? </s>
              <s>And this being ſo manifeſtly ſeen,
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              and we being certain, that
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              eadem est ratio totius & partium,
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              why
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              may we not aſſert it for a true and manifeſt propoſition, that the
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              natural motion of the Earth is the right motion
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              ad medium,
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              and
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              that of the Fire, the right
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              à medio
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              ?</s>
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            <p type="margin">
              <s>
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                <emph type="italics"/>
              Senſible
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              ments are to be
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              ferred before
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              mane argument
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              tions.
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              </s>
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            <p type="margin">
              <s>
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              He who denies
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              ſenſe, deſerves to
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              be deprived of it.
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              <s>Senſe ſheweth that
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              things grave move
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              to the
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              medium,
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              and
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              the light to the
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              concave.
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              </s>
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            <p type="main">
              <s>SALV. </s>
              <s>The moſt that you can pretend from this your
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              courſe, were it granted to be true, is that, like as the parts of the
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              Earth removed from the whole, namely, from the place where
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              they naturally reſt, that is in ſhort reduced to a depraved and
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              ordered diſpoſure, return to their place ſpontaneouſly, and
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              fore naturally in a right motion, (it being granted, that
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              eadem
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              ſit ratio totius & partium
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              ) ſo it may be inferred, that the
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              Terreſtrial Globe removed violently from the place aſſigned
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              it by nature, it would return by a right line. </s>
              <s>This, as I have
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              ſaid, is the moſt that can be granted you, and that onely for want
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              of examination; but he that ſhall with exactneſs reviſe theſe
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              things, will firſt deny, that the parts of the Earth, in returning to
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              its whole, move in a right line, and not by a circular or mixt; and
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              really you would have enough to do to demonſtrate the
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              ry, as you ſhall plainly ſee in the anſwers to the particular reaſons
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              and experiments alledged by
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              Ptolomey
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              and
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              Ariſtotle.
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              Secondly,
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              If another ſhould ſay that the
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              parts
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              of the Earth, go not in their
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              motion towards the Centre of the World, but to unite with its
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              Whole,
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              and that for that reaſon they naturally incline towards the
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              centre of the Terreſtrial Globe, by which inclination they
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              ſpire to form and preſerve it, what other
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              All,
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              or what other Centre
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              would you find for the World, to which the whole Terrene
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              Globe, being thence removed, would ſeek to return, that ſo the
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              reaſon of the
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              Whole
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              might be like to that of its
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              parts
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              ? </s>
              <s>It may be
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              added, That neither
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              Ariſtotle,
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              nor you can ever prove, that the
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              Earth
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              de facto
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              is in the centre of the Univerſe; but if any Centre </s>
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