The Motion of Things Which Are Now Perfect

It is necessary that lation should be the first motion for there is no necessity that a thing which is moved according to lation should either be increased or changed in quality and therefore neither that it should be generated or corrupted. No one of these could exist unless the continued motion exists which is produced by the first mover farther still lation also is the first motion in time for perpetual natures can alone be moved with this motion  for all these are posterior to generation hence if generation is not prior to lation neither will any other mutation.