4. It has already been said that we must rise to the Principle which
is really one, and not one in the same way as are other things, which,
being in themselves multiple, are one only by participation. On the
contrary, that Principle is not one by participation, as are all those
things which (being neutral) would just as lief be multiple as one.
We have also said that Intelligence and the intelligible world, are
more unitary than the remainder, that they approach Unity more than
all other things, but that they are not purely one. To the extent of
our ability we are now going to examine in what the Principle which is
purely one consists, purely and essentially, and not (accidentally)
from without.