BOOK I PART III
ulties are as little distinguished from each other
by the arrangement of their complex ideas. For
though it be a peculiar property of the mem-
ory to preserve the original order and position
of its ideas, while the imagination transposes
and changes them, as it pleases; yet this dif-
ference is not sufficient to distinguish them in
their operation, or make us know the one from
the other; it being impossible to recal the past
impressions, in order to compare them with
our present ideas, and see whether their ar-
rangement be exactly similar. Since therefore
the memory, is known, neither by the order of
its complex ideas, nor the nature of its simple
ones; it follows, that the difference betwixt it
and the imagination lies in its superior force
and vivacity. A man may indulge his fancy
in feigning any past scene of adventures; nor
would there be any possibility of distinguish-