SECT.  LXXXI.  To give a satisfactory Account of Motion we must recur to the First Mover.

Moreover, it has been proved that matter cannot be either infinite or eternal; and, therefore, there must be supposed both a first atom (by which motion must have begun at a precise moment), and a first concourse of atoms (that must have formed the first combination).  Now, I ask what mover gave motion to that first atom, and first set the great machine of the universe a-going?  It is not possible to elude this home question by an endless circle, for this question, lying within a finite circumference, must have an end at last; and so we must find the first atom in motion, and the first moment of that first motion, together with the first mover, whose hand made that first impression.