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>>17911616
Preposition 1: Things are in motion
Preposition 2: Things moved are moved by another
1. Whatever is in motion is moved by another.
2. Infinite regress per se subordinated series is impossible.
Whatever moves is moved by another, to be moved is to go from potency (moved) to an act (mobile) by a mover. (Definition of motion).
Potency and act cannot be attributed to the same thing in the same sense because it is contradicting.
Therefore, the thing which is moved (potential) does not move (act) itself.
Now for infinite regress, a) each moved mover is an instrumental mover; it communicates movement. b) That which communicates movement has it from another.
c) Thus, none of the instrumental movers have movement in of themselves.
d) Finally, the multiplication of those who lack movement of themselves will not result in one which does.