A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. II
John Stuart Mill · en
as a law of nature, and yet believe a fact in real contradiction to it.
We must disbelieve the alleged fact, or believe that we were mistaken in
admitting the supposed law.
But in order that any alleged fact should be contradictory to a law of
causation, the allegation must be, not simply that the cause existed
without being followed by the effect, for that would be no uncommon
occurrence; but that this happened in the absence of any adequate
counteracting cause. Now in the case of an alleged miracle, the
assertion is the exact opposite of this. It is, that the effect was
defeated, not in the absence, but in consequence of a counteracting
cause, namely, a direct interposition of an act of the will of some
being who has power over nature; and in particular of a Being, whose
will being assumed to have endowed all the causes with the powers by
which they produce their effects, may well be supposed able to
counteract them. A miracle (as was justly remarked by Brown[41]) is no
contradiction to the law of cause and effect; it is a new effect,
supposed to be produced by the introduction of a new cause. Of the
adequacy of that cause, if present, there can be no doubt; and the only
antecedent improbability which can be ascribed to the miracle, is the
improbability that any such cause existed.
All, therefore, which Hume has made out, and this he must be considered
to have made out, is, that (at least in the imperfect state of our
knowledge of natural agencies, which leaves it always possible that some
of the physical antecedents may have been hidden from us,) no evidence
can prove a miracle to any one who did not previously believe the
existence of a being or beings with supernatural power; or who believes
himself to have full proof that the character of the Being whom he
recognises, is inconsistent with his having seen fit to interfere on the
occasion in question.