"Both artefacts (the Shroud and the Holy Face of Manoppello) are true miracles that challenge scholars, as they appear to have been created by light, but with two different effects: in the case of the Shroud, as if it had been exposed to a photographic negative, and in the case of the Holy Face, as if it had been exposed to a positive. [...] The Shroud highlights both the human and divine nature of Christ, thanks to the bloodstains and the negative image. [...] Only with faith, then, is it possible to explain this energy within a dead body. This is why the two artefacts challenge reason, demonstrating the limits of science."