These are the elements, thus of necessity then subsisting, which the creator
of the fairest and best of created things associated with himself, when he
made the self-sufficing and most perfect God, using the necessary causes as
his ministers in the accomplishment of his work, but himself contriving the
good in all his creations. Wherefore we may distinguish two sorts of causes,
the one divine and the other necessary, and may seek for the divine in all
things, as far as our nature admits, with a view to the blessed life; but the
necessary kind only for the sake of the divine, considering that without them
and when isolated from them, these higher things for which we look cannot be
apprehended or received or in any way shared by us.
Seeing, then, that we have now prepared for our use the various classes of
causes which are the material out of which the remainder of our discourse must
be woven, just as wood is the material of the carpenter, let us revert in a
few words to the point at which we began, and then endeavour to add on a
suitable ending to the beginning of our tale.