Des Niau, The History of the Devils of Loudun…
“ It is true, however, that the conversion of a magician is so rare an occurrence that it must be placed in the rank of miracles. "I am not astonished," says one who was present, "at his impenitence, nor at his refusing to acknowledge himself guilty of magic, both under torture and at his execution, for it is known that magicians promise the devil never to confess this crime, and he in return hardens their heart, so that they go to their death stupid and altogether insensible to their misfortunes." ”
