But on the other hand, if the consideration of these instances makes us
take a resolution to reject all the trivial suggestions of the fancy,
and adhere to the understanding, that is, to the general and more
established properties of the imagination; even this resolution, if
steadily executed, would be dangerous, and attended with the most fatal
consequences. For I have already shewn,[18] that the understanding,
when it acts alone, and according to its most general principles,
entirely subverts itself, and leaves not the lowest degree of evidence
in any proposition, either in philosophy or common life. We save
ourselves from this total scepticism only by means of that singular and
seemingly trivial property of the fancy, by which we enter with
difficulty into remote views of things, and are not able to accompany
them with so sensible an impression, as we do those, which are more
easy and natural. Shall we, then, establish it for a general maxim,
that no refined or elaborate reasoning is ever to be received? Consider
well the consequences of such a principle. By this means you cut off
entirely all science and philosophy: You proceed upon one singular
quality of the imagination, and by a parity of reason must embrace all
of them: And you expressly contradict yourself; since this maxim must
be built on the preceding reasoning, which will be allowed to be
sufficiently refined and metaphysical. What party, then, shall we
choose among these difficulties? If we embrace this principle, and
condemn all refined reasoning, we run into the most manifest
absurdities. If we reject it in favour of these reasonings, we subvert
entirely the human understanding. We have, therefore, no choice left
but betwixt a false reason and none at all. For my part, know not what
ought to be done in the present case. I can only observe what is
commonly done; which is, that this difficulty is seldom or never
thought of; and even where it has once been present to the mind, is
quickly forgot, and leaves but a small impression behind it. Very
refined reflections have little or no influence upon us; and yet we do
not, and cannot establish it for a rule, that they ought not to have
any influence; which implies a manifest contradiction.
[18] Sect. 1.