The Eighth doth demonstrate that the motion of the infinity of worlds [8] is not the result of external motive force, but of their own nature, and th… - Giordano Bruno

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The Eighth doth demonstrate that the motion of the infinity of worlds [8] is not the result of external motive force, but of their own nature, and that despite this there existeth an infinite motor force.

The Ninth sheweth how infinite motion may be intensively verified in each of the worlds. To this we should add that since each moving body at the same time moveth itself and is moved, needs must that it may be seen in every point of the circle that it describeth around its own centre. And this objection we discharge on other occasions when it will be permissible to present the more diffuse doctrine.