The method which Dr. Priestley has taken to prove the existence of
a God, is by arguing from _effect_ to _cause_. He explodes that other
pretended proof _a priori_ which has so much raised the fame of
Dr. Clarke among other theologians. As to the attributes of the Deity,
Dr. Priestley is not quite so confident in his proofs there; and the
most amiable one, the most by mortals to be wished for, the _benevolence_
of God he almost gives up, or owns at least there is not so much proof
of it as of his other attributes. His observations are divided into
several Letters, this is one answer given to the whole; for it would be
to no purpose to reply to topics upon which the writers are agreed.
What therefore is not contradicted here, Dr. Priestley may in general
take to be allowed; but to obviate doubts and to allow his argument
every force, it may be fairer perhaps to recite at full length what in
this answer is allowed to be true, what is denied as false, what meant
to be exposed as absurd, and what rejected as assertions without proof,
inadmissible or inconclusive. The conclusion will contain some
observations upon the whole.


TRUISMS.

1. "Effects have their adequate causes."

2. "Nothing begins to exist without a cause foreign to itself."

3. "No being could make himself, for that would imply that he
existed and did not exist at the same time."

4. If one horse, or one tree, had a cause, all had."