In other cases he proceeds with more caution. He weighs the opposite experiments. All probability, then, supposes an opposition of experiments and observations, where the one side is found to over-balance the other and to produce a degree of evidence proportioned to the superiority. When the fact attested is such a one as has seldom fallen under our observation, there is a contest of two possible experiences, of which the one destroys the other as far as its force goes, and the superior can only operate on the mind by the force which remains. The very same principle of experience which gives us a certain degree of assurance in the testimony of witnesses gives us also, in this case, another degree of assurance against the fact which they endeavour to establish, from which consideration there necessarily arises a counterpoise, and mutual destruction of belief and authority.
Nothing is esteemed a miracle if it ever happen in the common course of nature.
It is no miracle that a man seemingly in good health should die on a sudden, because such a kind of death, though more unusual than any other, has yet been frequently observed to happen. But it is a miracle that a dead man should come to life, because that has never been observed in any age or country. There must, therefore, be a uniform experience against every miraculous event, otherwise the event would not merit that appellation. The curing of the sick, giving hearing to the deaf and sight to the blind, were everywhere talked of as the usual effects of that holy sepulchre. But, what is more extraordinary, many of the miracles were immediately proved upon the spot before judges of unquestioned integrity, attested by witnesses of credit and distinction, in a learned age, and in the most eminent theatre that is now in the world.