BOOK I PART IV
other faculty than the understanding. To which
we may add, that as long as we take our per-
ceptions and objects to be the same, we can
never infer the existence of the one from that
of the other, nor form any argument from the
relation of cause and effect; which is the only
one that earl assure us of matter of fact. Even
after we distinguish our perceptions from our
objects, it will appear presently, that we are
still incapable of reasoning from the existence
of one to that of the other: So that upon the
whole our reason neither does, nor is it possible
it ever should, upon any supposition, give us
an assurance of the continued and distinct ex-
istence of body. That opinion must be entirely
owing to theimagination: which must now be
the subject of our enquiry.
Since all impressions are internal and perish-