Granted that no one can draw a clear line and define the limits within which a miracle is healthy working and beyond which it is unwholesome, any more than he can prescribe the exact degree of fineness to which we must comminute our food; granted, again, that some can do more than others, and that at all times all men sport, so to speak, and surpass themselves, still we know as a general rule near enough, and find that the strongest can do but very little at a time, and, to return to Mr. Spencer, the fusion of two such hitherto unassociated ideas as race and experience was a miracle beyond our strength.
"Luck or Cunning?"
Samuel Butler