Alexander the False Prophet (17)

In that matter, dear Celsus, to tell the truth, we must excuse those men of Paphlagonia and Pontus, thick-witted, uneducated fellows that they were, for being deluded when they touched the serpent— Alexander let anyone do so who wished—and besides saw in a dim light what purported to be its head opening and shutting its mouth. Really the trick stood in need of a Democritus, or even Epicurus himself or Metrodorus, or someone else with a mind as firm as adamant toward such matters, so as to disbelieve and guess the truth-— one who, if he could not discover how it went, would at all events be convinced beforehand that though the method of the fraud escaped him, it was nevertheless all sham and could not possibly happen.