The _Sceptic_ is another enemy of religion, who naturally provokes the
indignation of all divines and graver philosophers; though it is
certain, that no man ever met with any such absurd creature, or
conversed with a man, who had no opinion or principle concerning any
subject, either of action or speculation. This begets a very natural
question; What is meant by a sceptic? And how far it is possible to push
these philosophical principles of doubt and uncertainty?

There is a species of scepticism, _antecedent_ to all study and
philosophy, which is much inculcated by Des Cartes and others, as a
sovereign preservative against error and precipitate judgement. It
recommends an universal doubt, not only of all our former opinions and
principles, but also of our very faculties; of whose veracity, say they,
we must assure ourselves, by a chain of reasoning, deduced from some
original principle, which cannot possibly be fallacious or deceitful.
But neither is there any such original principle, which has a
prerogative above others, that are self-evident and convincing: or if
there were, could we advance a step beyond it, but by the use of those
very faculties, of which we are supposed to be already diffident. The
Cartesian doubt, therefore, were it ever possible to be attained by any
human creature (as it plainly is not) would be entirely incurable; and
no reasoning could ever bring us to a state of assurance and conviction
upon any subject.

It must, however, be confessed, that this species of scepticism, when
more moderate, may be understood in a very reasonable sense, and is a
necessary preparative to the study of philosophy, by preserving a proper
impartiality in our judgements, and weaning our mind from all those
prejudices, which we may have imbibed from education or rash opinion. To
begin with clear and self-evident principles, to advance by timorous and