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Religion and Morality
44. Miracles; Religion
"Why, Sir, the great difficulty of proving miracles should make
us very cautious in believing them. But let us consider;
although God has made Nature to operate by certain fixed laws,
yet it is not unreasonable to think that he may suspend those
laws in order to establish a system highly advantageous to
mankind. Now the Christian Religion is a most beneficial system,
as it gives us light and certainty where we were before in
darkness and doubt. The miracles which prove it are attested by
men who had no interest in deceiving us; but who, on the
contrary, were told that they should suffer persecution, and did
actually lay down their lives in confirmation of the truth of the
facts which they asserted. 
Indeed, for some centuries the
heathens did not pretend to deny the miracles; but said they
were performed by the aid of evil spirits. This is a
circumstance of great weight. Then, Sir, when we take the proofs
derived from prophecies which have been so exactly fulfilled, we
have most satisfactory evidence. Supposing a miracle possible,
as to which, in my opinion, there can be no doubt, we have as
strong evidence for the miracles in support of Christianity, as
the nature of the thing admits."
Boswell: Life
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245. Miracles
Talking of Dr. Johnson's unwillingness to believe extraordinary
things, I ventured to say, "Sir, you come near to Hume's argument
against miracles, 'That it is more probable witnesses should lie,
or be mistaken, than that they should happen.'" Johnson:
"Why, Sir, Hume, taking the proposition simply, is right. But
the Christian revelation is not proved by the miracles alone, but
as connected with prophecies, and with the doctrines in
confirmation of which the miracles were wrought."
Boswell: Life
Link
